diff --git a/assets/Environment.tres b/assets/Environment.tres
new file mode 100644
index 0000000..80c3f5b
--- /dev/null
+++ b/assets/Environment.tres
@@ -0,0 +1,12 @@
+[gd_resource type="Environment" load_steps=3 format=3 uid="uid://clgblxkcf822n"]
+
+[sub_resource type="ProceduralSkyMaterial" id="ProceduralSkyMaterial_nics3"]
+
+[sub_resource type="Sky" id="Sky_ei11o"]
+sky_material = SubResource("ProceduralSkyMaterial_nics3")
+
+[resource]
+background_mode = 2
+sky = SubResource("Sky_ei11o")
+tonemap_mode = 3
+tonemap_white = 13.39
diff --git a/assets/draggables/test_draggable.tres b/assets/draggables/test_draggable.tres
new file mode 100644
index 0000000..4614ca8
--- /dev/null
+++ b/assets/draggables/test_draggable.tres
@@ -0,0 +1,11 @@
+[gd_resource type="Resource" script_class="Draggable" load_steps=4 format=3 uid="uid://cay05wpketmny"]
+
+[ext_resource type="Script" uid="uid://b3i73cilpra74" path="res://src/resources/draggable.gd" id="1_62sy8"]
+[ext_resource type="Texture2D" uid="uid://bdyc1cwthn845" path="res://icon.svg" id="1_kgkdo"]
+[ext_resource type="PackedScene" uid="uid://bjxjcx2qu16q5" path="res://scenes/flask.tscn" id="2_jkgu4"]
+
+[resource]
+script = ExtResource("1_62sy8")
+scene_to_spawn = ExtResource("2_jkgu4")
+icon = ExtResource("1_kgkdo")
+metadata/_custom_type_script = "uid://b3i73cilpra74"
diff --git a/assets/meshes/jar.res b/assets/meshes/jar.res
new file mode 100644
index 0000000..c6ca6a6
Binary files /dev/null and b/assets/meshes/jar.res differ
diff --git a/assets/meshes/jar_fill.res b/assets/meshes/jar_fill.res
new file mode 100644
index 0000000..66a9553
Binary files /dev/null and b/assets/meshes/jar_fill.res differ
diff --git a/assets/models/Chemistry.glb b/assets/models/Chemistry.glb
new file mode 100644
index 0000000..496bf3b
Binary files /dev/null and b/assets/models/Chemistry.glb differ
diff --git a/assets/models/Chemistry.glb.import b/assets/models/Chemistry.glb.import
new file mode 100644
index 0000000..650df12
--- /dev/null
+++ b/assets/models/Chemistry.glb.import
@@ -0,0 +1,74 @@
+[remap]
+
+importer="scene"
+importer_version=1
+type="PackedScene"
+uid="uid://bx5wihgk668w1"
+path="res://.godot/imported/Chemistry.glb-8fa27a23d9fb0d06abbb958b7e8c5388.scn"
+
+[deps]
+
+source_file="res://assets/models/Chemistry.glb"
+dest_files=["res://.godot/imported/Chemistry.glb-8fa27a23d9fb0d06abbb958b7e8c5388.scn"]
+
+[params]
+
+nodes/root_type=""
+nodes/root_name=""
+nodes/root_script=null
+nodes/apply_root_scale=true
+nodes/root_scale=1.0
+nodes/import_as_skeleton_bones=false
+nodes/use_name_suffixes=true
+nodes/use_node_type_suffixes=true
+meshes/ensure_tangents=true
+meshes/generate_lods=true
+meshes/create_shadow_meshes=true
+meshes/light_baking=1
+meshes/lightmap_texel_size=0.2
+meshes/force_disable_compression=false
+skins/use_named_skins=true
+animation/import=true
+animation/fps=30
+animation/trimming=false
+animation/remove_immutable_tracks=true
+animation/import_rest_as_RESET=false
+import_script/path=""
+materials/extract=0
+materials/extract_format=0
+materials/extract_path=""
+_subresources={
+"materials": {
+"@MATERIAL:3": {
+"use_external/enabled": true,
+"use_external/path": "uid://64m17act0kwu"
+},
+"mat_glass": {
+"use_external/enabled": true,
+"use_external/fallback_path": "res://assets/materials/mat_glass.tres",
+"use_external/path": "uid://64m17act0kwu"
+}
+},
+"meshes": {
+"Chemistry_Circle_001": {
+"generate/lightmap_uv": 0,
+"generate/lods": 0,
+"generate/shadow_meshes": 0,
+"lods/normal_merge_angle": 20.0,
+"save_to_file/enabled": true,
+"save_to_file/fallback_path": "res://assets/meshes/jar_fill.res",
+"save_to_file/path": "uid://dxeseuqcwne1m"
+},
+"Chemistry_Circle_003": {
+"generate/lightmap_uv": 0,
+"generate/lods": 0,
+"generate/shadow_meshes": 0,
+"lods/normal_merge_angle": 20.0,
+"save_to_file/enabled": true,
+"save_to_file/fallback_path": "res://assets/meshes/jar.res",
+"save_to_file/path": "uid://dddqboph2ygmw"
+}
+}
+}
+gltf/naming_version=2
+gltf/embedded_image_handling=1
diff --git a/assets/models/Drip.glb b/assets/models/Drip.glb
new file mode 100644
index 0000000..461807d
Binary files /dev/null and b/assets/models/Drip.glb differ
diff --git a/assets/models/Drip.glb.import b/assets/models/Drip.glb.import
new file mode 100644
index 0000000..e6a5589
--- /dev/null
+++ b/assets/models/Drip.glb.import
@@ -0,0 +1,50 @@
+[remap]
+
+importer="scene"
+importer_version=1
+type="PackedScene"
+uid="uid://bg8y4u2a4hx3p"
+path="res://.godot/imported/Drip.glb-91c932019939c0c57a2bbeb7aa92f14a.scn"
+
+[deps]
+
+source_file="res://assets/models/Drip.glb"
+dest_files=["res://.godot/imported/Drip.glb-91c932019939c0c57a2bbeb7aa92f14a.scn"]
+
+[params]
+
+nodes/root_type=""
+nodes/root_name=""
+nodes/root_script=null
+nodes/apply_root_scale=true
+nodes/root_scale=1.0
+nodes/import_as_skeleton_bones=false
+nodes/use_name_suffixes=true
+nodes/use_node_type_suffixes=true
+meshes/ensure_tangents=true
+meshes/generate_lods=true
+meshes/create_shadow_meshes=true
+meshes/light_baking=1
+meshes/lightmap_texel_size=0.2
+meshes/force_disable_compression=false
+skins/use_named_skins=true
+animation/import=true
+animation/fps=30
+animation/trimming=false
+animation/remove_immutable_tracks=true
+animation/import_rest_as_RESET=false
+import_script/path=""
+materials/extract=0
+materials/extract_format=0
+materials/extract_path=""
+_subresources={
+"materials": {
+"mat_glass": {
+"use_external/enabled": true,
+"use_external/fallback_path": "res://assets/materials/mat_glass.tres",
+"use_external/path": "uid://64m17act0kwu"
+}
+}
+}
+gltf/naming_version=2
+gltf/embedded_image_handling=1
diff --git a/assets/models/FlaskHolder.glb b/assets/models/FlaskHolder.glb
new file mode 100644
index 0000000..992018c
Binary files /dev/null and b/assets/models/FlaskHolder.glb differ
diff --git a/assets/models/FlaskHolder.glb.import b/assets/models/FlaskHolder.glb.import
new file mode 100644
index 0000000..6aea7d7
--- /dev/null
+++ b/assets/models/FlaskHolder.glb.import
@@ -0,0 +1,42 @@
+[remap]
+
+importer="scene"
+importer_version=1
+type="PackedScene"
+uid="uid://dwtaqdacgcysa"
+path="res://.godot/imported/FlaskHolder.glb-686e08202ed3950f10d7e2c9519a8428.scn"
+
+[deps]
+
+source_file="res://assets/models/FlaskHolder.glb"
+dest_files=["res://.godot/imported/FlaskHolder.glb-686e08202ed3950f10d7e2c9519a8428.scn"]
+
+[params]
+
+nodes/root_type=""
+nodes/root_name=""
+nodes/root_script=null
+nodes/apply_root_scale=true
+nodes/root_scale=1.0
+nodes/import_as_skeleton_bones=false
+nodes/use_name_suffixes=true
+nodes/use_node_type_suffixes=true
+meshes/ensure_tangents=true
+meshes/generate_lods=true
+meshes/create_shadow_meshes=true
+meshes/light_baking=1
+meshes/lightmap_texel_size=0.2
+meshes/force_disable_compression=false
+skins/use_named_skins=true
+animation/import=true
+animation/fps=30
+animation/trimming=false
+animation/remove_immutable_tracks=true
+animation/import_rest_as_RESET=false
+import_script/path=""
+materials/extract=0
+materials/extract_format=0
+materials/extract_path=""
+_subresources={}
+gltf/naming_version=2
+gltf/embedded_image_handling=1
diff --git a/assets/reagents/AgNO3.tres b/assets/reagents/AgNO3.tres
new file mode 100644
index 0000000..090f29f
--- /dev/null
+++ b/assets/reagents/AgNO3.tres
@@ -0,0 +1,9 @@
+[gd_resource type="Resource" script_class="Reagent" load_steps=3 format=3 uid="uid://ctpbdqi5rvll5"]
+
+[ext_resource type="Script" uid="uid://bditqax8ibmxw" path="res://src/resources/reagent.gd" id="1_8kg0o"]
+[ext_resource type="Resource" uid="uid://cb148scow5112" path="res://assets/substances/AgNO3.tres" id="2_dkaga"]
+
+[resource]
+script = ExtResource("1_8kg0o")
+substance = ExtResource("2_dkaga")
+metadata/_custom_type_script = "uid://b8q5buwgvppyh"
diff --git a/assets/reagents/CH3COOH.tres b/assets/reagents/CH3COOH.tres
new file mode 100644
index 0000000..79bfef1
--- /dev/null
+++ b/assets/reagents/CH3COOH.tres
@@ -0,0 +1,9 @@
+[gd_resource type="Resource" script_class="Reagent" load_steps=3 format=3 uid="uid://bdbme26jh0616"]
+
+[ext_resource type="Script" uid="uid://bditqax8ibmxw" path="res://src/resources/reagent.gd" id="1_x5037"]
+[ext_resource type="Resource" uid="uid://dn10p6rbdd7qb" path="res://assets/substances/CH3COOH.tres" id="2_1mds3"]
+
+[resource]
+script = ExtResource("1_x5037")
+substance = ExtResource("2_1mds3")
+metadata/_custom_type_script = "uid://b8q5buwgvppyh"
diff --git a/assets/reagents/CH3COONa.tres b/assets/reagents/CH3COONa.tres
new file mode 100644
index 0000000..9021fdc
--- /dev/null
+++ b/assets/reagents/CH3COONa.tres
@@ -0,0 +1,9 @@
+[gd_resource type="Resource" script_class="Reagent" load_steps=3 format=3 uid="uid://wq4jmaqio5tj"]
+
+[ext_resource type="Script" uid="uid://bditqax8ibmxw" path="res://src/resources/reagent.gd" id="1_gl6ue"]
+[ext_resource type="Resource" uid="uid://dr65qbkum4emy" path="res://assets/substances/CH3COONa.tres" id="2_agk2i"]
+
+[resource]
+script = ExtResource("1_gl6ue")
+substance = ExtResource("2_agk2i")
+metadata/_custom_type_script = "uid://b8q5buwgvppyh"
diff --git a/assets/reagents/CaCl.tres b/assets/reagents/CaCl.tres
new file mode 100644
index 0000000..f949756
--- /dev/null
+++ b/assets/reagents/CaCl.tres
@@ -0,0 +1,9 @@
+[gd_resource type="Resource" script_class="Reagent" load_steps=3 format=3 uid="uid://dkj0be8n8hqrd"]
+
+[ext_resource type="Script" uid="uid://bditqax8ibmxw" path="res://src/resources/reagent.gd" id="1_0mtjn"]
+[ext_resource type="Resource" uid="uid://gs5ikp6h02kx" path="res://assets/substances/CaCl.tres" id="2_s10r6"]
+
+[resource]
+script = ExtResource("1_0mtjn")
+substance = ExtResource("2_s10r6")
+metadata/_custom_type_script = "uid://b8q5buwgvppyh"
diff --git a/assets/reagents/CuSO4.tres b/assets/reagents/CuSO4.tres
new file mode 100644
index 0000000..3c5866a
--- /dev/null
+++ b/assets/reagents/CuSO4.tres
@@ -0,0 +1,9 @@
+[gd_resource type="Resource" script_class="Reagent" load_steps=3 format=3 uid="uid://drcsxqrfgtklt"]
+
+[ext_resource type="Script" uid="uid://bditqax8ibmxw" path="res://src/resources/reagent.gd" id="1_jvmcm"]
+[ext_resource type="Resource" uid="uid://ceq47d1v3l3ag" path="res://assets/substances/CuSO4.tres" id="2_uvje5"]
+
+[resource]
+script = ExtResource("1_jvmcm")
+substance = ExtResource("2_uvje5")
+metadata/_custom_type_script = "uid://b8q5buwgvppyh"
diff --git a/assets/reagents/FeSO4.tres b/assets/reagents/FeSO4.tres
new file mode 100644
index 0000000..afd41b3
--- /dev/null
+++ b/assets/reagents/FeSO4.tres
@@ -0,0 +1,9 @@
+[gd_resource type="Resource" script_class="Reagent" load_steps=3 format=3 uid="uid://pofsgpx0irdn"]
+
+[ext_resource type="Script" uid="uid://bditqax8ibmxw" path="res://src/resources/reagent.gd" id="1_cyap5"]
+[ext_resource type="Resource" uid="uid://cai5kwbx8gpst" path="res://assets/substances/FeSO4.tres" id="2_725bo"]
+
+[resource]
+script = ExtResource("1_cyap5")
+substance = ExtResource("2_725bo")
+metadata/_custom_type_script = "uid://b8q5buwgvppyh"
diff --git a/assets/reagents/HCl.tres b/assets/reagents/HCl.tres
new file mode 100644
index 0000000..af6703e
--- /dev/null
+++ b/assets/reagents/HCl.tres
@@ -0,0 +1,9 @@
+[gd_resource type="Resource" script_class="Reagent" load_steps=3 format=3 uid="uid://cxpovcqviqurr"]
+
+[ext_resource type="Script" uid="uid://bditqax8ibmxw" path="res://src/resources/reagent.gd" id="1_5si53"]
+[ext_resource type="Resource" uid="uid://bj3cdfwvgksee" path="res://assets/substances/HCl.tres" id="2_no7s4"]
+
+[resource]
+script = ExtResource("1_5si53")
+substance = ExtResource("2_no7s4")
+metadata/_custom_type_script = "uid://b8q5buwgvppyh"
diff --git a/assets/reagents/KCl.tres b/assets/reagents/KCl.tres
new file mode 100644
index 0000000..7f17a85
--- /dev/null
+++ b/assets/reagents/KCl.tres
@@ -0,0 +1,9 @@
+[gd_resource type="Resource" script_class="Reagent" load_steps=3 format=3 uid="uid://ic4x25e5j8o"]
+
+[ext_resource type="Script" uid="uid://bditqax8ibmxw" path="res://src/resources/reagent.gd" id="1_av563"]
+[ext_resource type="Resource" uid="uid://dcygjcbfhw6vv" path="res://assets/substances/KCl.tres" id="2_omcss"]
+
+[resource]
+script = ExtResource("1_av563")
+substance = ExtResource("2_omcss")
+metadata/_custom_type_script = "uid://b8q5buwgvppyh"
diff --git a/assets/reagents/KI.tres b/assets/reagents/KI.tres
new file mode 100644
index 0000000..feae8c0
--- /dev/null
+++ b/assets/reagents/KI.tres
@@ -0,0 +1,9 @@
+[gd_resource type="Resource" script_class="Reagent" load_steps=3 format=3 uid="uid://gn654lim8gy6"]
+
+[ext_resource type="Script" uid="uid://bditqax8ibmxw" path="res://src/resources/reagent.gd" id="1_psyvl"]
+[ext_resource type="Resource" uid="uid://catmteeotjc7v" path="res://assets/substances/KI.tres" id="2_33y5b"]
+
+[resource]
+script = ExtResource("1_psyvl")
+substance = ExtResource("2_33y5b")
+metadata/_custom_type_script = "uid://b8q5buwgvppyh"
diff --git a/assets/reagents/LeadNitrate.tres b/assets/reagents/LeadNitrate.tres
new file mode 100644
index 0000000..a27e503
--- /dev/null
+++ b/assets/reagents/LeadNitrate.tres
@@ -0,0 +1,9 @@
+[gd_resource type="Resource" script_class="Reagent" load_steps=3 format=3 uid="uid://bwvdeux5lbcmk"]
+
+[ext_resource type="Script" uid="uid://bditqax8ibmxw" path="res://src/resources/reagent.gd" id="1_t5esp"]
+[ext_resource type="Resource" uid="uid://de3dl5upbt163" path="res://assets/substances/LeadNitrate.tres" id="2_xaep7"]
+
+[resource]
+script = ExtResource("1_t5esp")
+substance = ExtResource("2_xaep7")
+metadata/_custom_type_script = "uid://b8q5buwgvppyh"
diff --git a/assets/reagents/MethylOrange.tres b/assets/reagents/MethylOrange.tres
new file mode 100644
index 0000000..c41abc9
--- /dev/null
+++ b/assets/reagents/MethylOrange.tres
@@ -0,0 +1,9 @@
+[gd_resource type="Resource" script_class="Reagent" load_steps=3 format=3 uid="uid://c24arc3ll2bpu"]
+
+[ext_resource type="Script" uid="uid://bditqax8ibmxw" path="res://src/resources/reagent.gd" id="1_4peq4"]
+[ext_resource type="Resource" uid="uid://bnywd2asdr3eo" path="res://assets/substances/MethylOrange.tres" id="2_8or78"]
+
+[resource]
+script = ExtResource("1_4peq4")
+substance = ExtResource("2_8or78")
+metadata/_custom_type_script = "uid://b8q5buwgvppyh"
diff --git a/assets/reagents/NH4CL.tres b/assets/reagents/NH4CL.tres
new file mode 100644
index 0000000..edb7149
--- /dev/null
+++ b/assets/reagents/NH4CL.tres
@@ -0,0 +1,9 @@
+[gd_resource type="Resource" script_class="Reagent" load_steps=3 format=3 uid="uid://u6wygb054jp5"]
+
+[ext_resource type="Script" uid="uid://bditqax8ibmxw" path="res://src/resources/reagent.gd" id="1_6e5yj"]
+[ext_resource type="Resource" uid="uid://b0pdv8e1ybr8h" path="res://assets/substances/NH4CL.tres" id="2_dvcpb"]
+
+[resource]
+script = ExtResource("1_6e5yj")
+substance = ExtResource("2_dvcpb")
+metadata/_custom_type_script = "uid://b8q5buwgvppyh"
diff --git a/assets/reagents/Na2CO3.tres b/assets/reagents/Na2CO3.tres
new file mode 100644
index 0000000..487f2fa
--- /dev/null
+++ b/assets/reagents/Na2CO3.tres
@@ -0,0 +1,9 @@
+[gd_resource type="Resource" script_class="Reagent" load_steps=3 format=3 uid="uid://dbq6clr3srk14"]
+
+[ext_resource type="Script" uid="uid://bditqax8ibmxw" path="res://src/resources/reagent.gd" id="1_ebm1s"]
+[ext_resource type="Resource" uid="uid://df17c818irsju" path="res://assets/substances/Na2CO3.tres" id="2_l80fk"]
+
+[resource]
+script = ExtResource("1_ebm1s")
+substance = ExtResource("2_l80fk")
+metadata/_custom_type_script = "uid://b8q5buwgvppyh"
diff --git a/assets/reagents/Na2S.tres b/assets/reagents/Na2S.tres
new file mode 100644
index 0000000..5f939d2
--- /dev/null
+++ b/assets/reagents/Na2S.tres
@@ -0,0 +1,9 @@
+[gd_resource type="Resource" script_class="Reagent" load_steps=3 format=3 uid="uid://bjp7cj6q4jpib"]
+
+[ext_resource type="Script" uid="uid://bditqax8ibmxw" path="res://src/resources/reagent.gd" id="1_u8eof"]
+[ext_resource type="Resource" uid="uid://by8jsgsb5c7ly" path="res://assets/substances/Na2S.tres" id="2_odsfk"]
+
+[resource]
+script = ExtResource("1_u8eof")
+substance = ExtResource("2_odsfk")
+metadata/_custom_type_script = "uid://b8q5buwgvppyh"
diff --git a/assets/reagents/NaCl.tres b/assets/reagents/NaCl.tres
new file mode 100644
index 0000000..4a74001
--- /dev/null
+++ b/assets/reagents/NaCl.tres
@@ -0,0 +1,9 @@
+[gd_resource type="Resource" script_class="Reagent" load_steps=3 format=3 uid="uid://cr6nenbh0pufd"]
+
+[ext_resource type="Script" uid="uid://bditqax8ibmxw" path="res://src/resources/reagent.gd" id="1_hmltd"]
+[ext_resource type="Resource" uid="uid://chdrv5i45chwe" path="res://assets/substances/NaCl.tres" id="2_xtjyv"]
+
+[resource]
+script = ExtResource("1_hmltd")
+substance = ExtResource("2_xtjyv")
+metadata/_custom_type_script = "uid://b8q5buwgvppyh"
diff --git a/assets/reagents/NaOH.tres b/assets/reagents/NaOH.tres
new file mode 100644
index 0000000..5218236
--- /dev/null
+++ b/assets/reagents/NaOH.tres
@@ -0,0 +1,9 @@
+[gd_resource type="Resource" script_class="Reagent" load_steps=3 format=3 uid="uid://wlki8ccdmx5"]
+
+[ext_resource type="Script" uid="uid://bditqax8ibmxw" path="res://src/resources/reagent.gd" id="1_twy2e"]
+[ext_resource type="Resource" uid="uid://30ym4xb0uu3y" path="res://assets/substances/NaOH.tres" id="2_ymi7t"]
+
+[resource]
+script = ExtResource("1_twy2e")
+substance = ExtResource("2_ymi7t")
+metadata/_custom_type_script = "uid://b8q5buwgvppyh"
diff --git a/assets/reagents/Phenolphtalein.tres b/assets/reagents/Phenolphtalein.tres
new file mode 100644
index 0000000..fdea53b
--- /dev/null
+++ b/assets/reagents/Phenolphtalein.tres
@@ -0,0 +1,9 @@
+[gd_resource type="Resource" script_class="Reagent" load_steps=3 format=3 uid="uid://dia0grmva8062"]
+
+[ext_resource type="Script" uid="uid://bditqax8ibmxw" path="res://src/resources/reagent.gd" id="1_v8ev6"]
+[ext_resource type="Resource" uid="uid://brih4gryc1acx" path="res://assets/substances/Phenolphtalein.tres" id="2_ikqma"]
+
+[resource]
+script = ExtResource("1_v8ev6")
+substance = ExtResource("2_ikqma")
+metadata/_custom_type_script = "uid://b8q5buwgvppyh"
diff --git a/assets/substances/AgNO3.tres b/assets/substances/AgNO3.tres
new file mode 100644
index 0000000..d9f5359
--- /dev/null
+++ b/assets/substances/AgNO3.tres
@@ -0,0 +1,12 @@
+[gd_resource type="Resource" script_class="Substance" load_steps=2 format=3 uid="uid://cb148scow5112"]
+
+[ext_resource type="Script" uid="uid://b8q5buwgvppyh" path="res://src/resources/substance.gd" id="1_ntpww"]
+
+[resource]
+script = ExtResource("1_ntpww")
+formula = &"AgNO_3"
+scientific_name = &"Нитрат серебра"
+melting_point = 209.7
+boiling_point = 9999999999999.0
+color = Color(1, 1, 1, 1)
+metadata/_custom_type_script = "uid://b8q5buwgvppyh"
diff --git a/assets/substances/CH3COOH.tres b/assets/substances/CH3COOH.tres
new file mode 100644
index 0000000..18602e7
--- /dev/null
+++ b/assets/substances/CH3COOH.tres
@@ -0,0 +1,12 @@
+[gd_resource type="Resource" script_class="Substance" load_steps=2 format=3 uid="uid://dn10p6rbdd7qb"]
+
+[ext_resource type="Script" uid="uid://b8q5buwgvppyh" path="res://src/resources/substance.gd" id="1_2ft8j"]
+
+[resource]
+script = ExtResource("1_2ft8j")
+formula = &"CH_3COOH"
+scientific_name = &"Уксусная кислота"
+melting_point = 16.75
+boiling_point = 118.1
+color = Color(1, 1, 1, 0.3372549)
+metadata/_custom_type_script = "uid://b8q5buwgvppyh"
diff --git a/assets/substances/CH3COONa.tres b/assets/substances/CH3COONa.tres
new file mode 100644
index 0000000..8c98715
--- /dev/null
+++ b/assets/substances/CH3COONa.tres
@@ -0,0 +1,12 @@
+[gd_resource type="Resource" script_class="Substance" load_steps=2 format=3 uid="uid://dr65qbkum4emy"]
+
+[ext_resource type="Script" uid="uid://b8q5buwgvppyh" path="res://src/resources/substance.gd" id="1_551qc"]
+
+[resource]
+script = ExtResource("1_551qc")
+formula = &"CH_3COONa"
+scientific_name = &"Ацетат натрия"
+melting_point = 328.0
+boiling_point = 9999999999.0
+color = Color(1, 1, 1, 1)
+metadata/_custom_type_script = "uid://b8q5buwgvppyh"
diff --git a/assets/substances/CaCl.tres b/assets/substances/CaCl.tres
new file mode 100644
index 0000000..c1be936
--- /dev/null
+++ b/assets/substances/CaCl.tres
@@ -0,0 +1,12 @@
+[gd_resource type="Resource" script_class="Substance" load_steps=2 format=3 uid="uid://gs5ikp6h02kx"]
+
+[ext_resource type="Script" uid="uid://b8q5buwgvppyh" path="res://src/resources/substance.gd" id="1_iebgm"]
+
+[resource]
+script = ExtResource("1_iebgm")
+formula = &"CaCl"
+scientific_name = &"Хлорид кальция"
+melting_point = 772.0
+boiling_point = 1935.0
+color = Color(1, 1, 1, 1)
+metadata/_custom_type_script = "uid://b8q5buwgvppyh"
diff --git a/assets/substances/CuSO4.tres b/assets/substances/CuSO4.tres
new file mode 100644
index 0000000..35efebf
--- /dev/null
+++ b/assets/substances/CuSO4.tres
@@ -0,0 +1,12 @@
+[gd_resource type="Resource" script_class="Substance" load_steps=2 format=3 uid="uid://ceq47d1v3l3ag"]
+
+[ext_resource type="Script" uid="uid://b8q5buwgvppyh" path="res://src/resources/substance.gd" id="1_7j6i3"]
+
+[resource]
+script = ExtResource("1_7j6i3")
+formula = &"CuSO_4"
+scientific_name = &"Сульфат меди (II)"
+melting_point = 200.0
+boiling_point = 21515.0
+color = Color(0, 0.2166667, 1, 1)
+metadata/_custom_type_script = "uid://b8q5buwgvppyh"
diff --git a/assets/substances/FeSO4.tres b/assets/substances/FeSO4.tres
new file mode 100644
index 0000000..dda343d
--- /dev/null
+++ b/assets/substances/FeSO4.tres
@@ -0,0 +1,12 @@
+[gd_resource type="Resource" script_class="Substance" load_steps=2 format=3 uid="uid://cai5kwbx8gpst"]
+
+[ext_resource type="Script" uid="uid://b8q5buwgvppyh" path="res://src/resources/substance.gd" id="1_5q6dl"]
+
+[resource]
+script = ExtResource("1_5q6dl")
+formula = &"FeSO_4"
+scientific_name = &"Сульфат железа (II)"
+melting_point = 1e+16
+boiling_point = 1e+16
+color = Color(0.35377085, 0.8262475, 0.78860706, 1)
+metadata/_custom_type_script = "uid://b8q5buwgvppyh"
diff --git a/assets/substances/HCl.tres b/assets/substances/HCl.tres
new file mode 100644
index 0000000..de96954
--- /dev/null
+++ b/assets/substances/HCl.tres
@@ -0,0 +1,12 @@
+[gd_resource type="Resource" script_class="Substance" load_steps=2 format=3 uid="uid://bj3cdfwvgksee"]
+
+[ext_resource type="Script" uid="uid://b8q5buwgvppyh" path="res://src/resources/substance.gd" id="1_jqfn0"]
+
+[resource]
+script = ExtResource("1_jqfn0")
+formula = &"HCl"
+scientific_name = &"Соляная кислота"
+melting_point = -30.0
+boiling_point = 48.0
+color = Color(1, 1, 1, 1)
+metadata/_custom_type_script = "uid://b8q5buwgvppyh"
diff --git a/assets/substances/KCl.tres b/assets/substances/KCl.tres
new file mode 100644
index 0000000..20923fd
--- /dev/null
+++ b/assets/substances/KCl.tres
@@ -0,0 +1,12 @@
+[gd_resource type="Resource" script_class="Substance" load_steps=2 format=3 uid="uid://dcygjcbfhw6vv"]
+
+[ext_resource type="Script" uid="uid://b8q5buwgvppyh" path="res://src/resources/substance.gd" id="1_vjdlt"]
+
+[resource]
+script = ExtResource("1_vjdlt")
+formula = &"KCl"
+scientific_name = &"Хлорид калия"
+melting_point = 776.0
+boiling_point = 1407.0
+color = Color(1, 1, 1, 1)
+metadata/_custom_type_script = "uid://b8q5buwgvppyh"
diff --git a/assets/substances/KI.tres b/assets/substances/KI.tres
new file mode 100644
index 0000000..bad43f4
--- /dev/null
+++ b/assets/substances/KI.tres
@@ -0,0 +1,12 @@
+[gd_resource type="Resource" script_class="Substance" load_steps=2 format=3 uid="uid://catmteeotjc7v"]
+
+[ext_resource type="Script" uid="uid://b8q5buwgvppyh" path="res://src/resources/substance.gd" id="1_r3ou2"]
+
+[resource]
+script = ExtResource("1_r3ou2")
+formula = &"KI"
+scientific_name = &"Йодид калия"
+melting_point = 681.0
+boiling_point = 1324.0
+color = Color(1, 1, 1, 1)
+metadata/_custom_type_script = "uid://b8q5buwgvppyh"
diff --git a/assets/substances/LeadNitrate.tres b/assets/substances/LeadNitrate.tres
new file mode 100644
index 0000000..9786fcb
--- /dev/null
+++ b/assets/substances/LeadNitrate.tres
@@ -0,0 +1,12 @@
+[gd_resource type="Resource" script_class="Substance" load_steps=2 format=3 uid="uid://de3dl5upbt163"]
+
+[ext_resource type="Script" uid="uid://b8q5buwgvppyh" path="res://src/resources/substance.gd" id="1_1rh8q"]
+
+[resource]
+script = ExtResource("1_1rh8q")
+formula = &"Pb(NO_3)_2"
+scientific_name = &"Нитрат свинца"
+melting_point = 270.0
+boiling_point = 999999.0
+color = Color(1, 1, 1, 1)
+metadata/_custom_type_script = "uid://b8q5buwgvppyh"
diff --git a/assets/substances/MethylOrange.tres b/assets/substances/MethylOrange.tres
new file mode 100644
index 0000000..fe25dc5
--- /dev/null
+++ b/assets/substances/MethylOrange.tres
@@ -0,0 +1,13 @@
+[gd_resource type="Resource" script_class="Substance" load_steps=2 format=3 uid="uid://bnywd2asdr3eo"]
+
+[ext_resource type="Script" uid="uid://b8q5buwgvppyh" path="res://src/resources/substance.gd" id="1_iruga"]
+
+[resource]
+script = ExtResource("1_iruga")
+formula = &"C_14H_14N_3O_3SNa"
+scientific_name = &"Метиловый оранжевый"
+melting_point = 300.0
+boiling_point = 520.0
+color = Color(1, 0.26666665, 0, 1)
+prefer_scientific_name = true
+metadata/_custom_type_script = "uid://b8q5buwgvppyh"
diff --git a/assets/substances/NH4CL.tres b/assets/substances/NH4CL.tres
new file mode 100644
index 0000000..0bc85b2
--- /dev/null
+++ b/assets/substances/NH4CL.tres
@@ -0,0 +1,12 @@
+[gd_resource type="Resource" script_class="Substance" load_steps=2 format=3 uid="uid://b0pdv8e1ybr8h"]
+
+[ext_resource type="Script" uid="uid://b8q5buwgvppyh" path="res://src/resources/substance.gd" id="1_r754y"]
+
+[resource]
+script = ExtResource("1_r754y")
+formula = &"NH_4Cl"
+scientific_name = &"Соляная кислота"
+melting_point = 337.6
+boiling_point = 520.0
+color = Color(1, 1, 1, 1)
+metadata/_custom_type_script = "uid://b8q5buwgvppyh"
diff --git a/assets/substances/Na2CO3.tres b/assets/substances/Na2CO3.tres
new file mode 100644
index 0000000..acc19fb
--- /dev/null
+++ b/assets/substances/Na2CO3.tres
@@ -0,0 +1,12 @@
+[gd_resource type="Resource" script_class="Substance" load_steps=2 format=3 uid="uid://df17c818irsju"]
+
+[ext_resource type="Script" uid="uid://b8q5buwgvppyh" path="res://src/resources/substance.gd" id="1_bi0ti"]
+
+[resource]
+script = ExtResource("1_bi0ti")
+formula = &"Na_2CO_3"
+scientific_name = &"Карбонат кария"
+melting_point = 854.0
+boiling_point = 1000.0
+color = Color(1, 1, 1, 1)
+metadata/_custom_type_script = "uid://b8q5buwgvppyh"
diff --git a/assets/substances/Na2S.tres b/assets/substances/Na2S.tres
new file mode 100644
index 0000000..aa4d9a4
--- /dev/null
+++ b/assets/substances/Na2S.tres
@@ -0,0 +1,12 @@
+[gd_resource type="Resource" script_class="Substance" load_steps=2 format=3 uid="uid://by8jsgsb5c7ly"]
+
+[ext_resource type="Script" uid="uid://b8q5buwgvppyh" path="res://src/resources/substance.gd" id="1_34ksu"]
+
+[resource]
+script = ExtResource("1_34ksu")
+formula = &"Na_2S"
+scientific_name = &"Сульфид натрия"
+melting_point = 1176.0
+boiling_point = 99999999999.0
+color = Color(0.9993091, 0.8301688, 0.668, 1)
+metadata/_custom_type_script = "uid://b8q5buwgvppyh"
diff --git a/assets/substances/NaCl.tres b/assets/substances/NaCl.tres
new file mode 100644
index 0000000..076929c
--- /dev/null
+++ b/assets/substances/NaCl.tres
@@ -0,0 +1,12 @@
+[gd_resource type="Resource" script_class="Substance" load_steps=2 format=3 uid="uid://chdrv5i45chwe"]
+
+[ext_resource type="Script" uid="uid://b8q5buwgvppyh" path="res://src/resources/substance.gd" id="1_77jso"]
+
+[resource]
+script = ExtResource("1_77jso")
+formula = &"NaCl"
+scientific_name = &"Хлорид натрия"
+melting_point = 800.8
+boiling_point = 1465.0
+color = Color(1, 1, 1, 1)
+metadata/_custom_type_script = "uid://b8q5buwgvppyh"
diff --git a/assets/substances/NaOH.tres b/assets/substances/NaOH.tres
new file mode 100644
index 0000000..6d9a26a
--- /dev/null
+++ b/assets/substances/NaOH.tres
@@ -0,0 +1,12 @@
+[gd_resource type="Resource" script_class="Substance" load_steps=2 format=3 uid="uid://30ym4xb0uu3y"]
+
+[ext_resource type="Script" uid="uid://b8q5buwgvppyh" path="res://src/resources/substance.gd" id="1_m1aun"]
+
+[resource]
+script = ExtResource("1_m1aun")
+formula = &"NaOH"
+scientific_name = &"Гидроксид натрия"
+melting_point = 323.0
+boiling_point = 1403.0
+color = Color(1, 1, 1, 1)
+metadata/_custom_type_script = "uid://b8q5buwgvppyh"
diff --git a/assets/substances/Phenolphtalein.tres b/assets/substances/Phenolphtalein.tres
new file mode 100644
index 0000000..b89fb80
--- /dev/null
+++ b/assets/substances/Phenolphtalein.tres
@@ -0,0 +1,13 @@
+[gd_resource type="Resource" script_class="Substance" load_steps=2 format=3 uid="uid://brih4gryc1acx"]
+
+[ext_resource type="Script" uid="uid://b8q5buwgvppyh" path="res://src/resources/substance.gd" id="1_td2hf"]
+
+[resource]
+script = ExtResource("1_td2hf")
+formula = &"C_20H_14O_4"
+scientific_name = &"Фенолфталеин"
+melting_point = 278.0
+boiling_point = 557.8
+color = Color(1, 1, 1, 0.43529412)
+prefer_scientific_name = true
+metadata/_custom_type_script = "uid://b8q5buwgvppyh"
diff --git a/export_presets.cfg b/export_presets.cfg
new file mode 100644
index 0000000..863fad4
--- /dev/null
+++ b/export_presets.cfg
@@ -0,0 +1,67 @@
+[preset.0]
+
+name="Windows Desktop"
+platform="Windows Desktop"
+runnable=true
+advanced_options=false
+dedicated_server=false
+custom_features=""
+export_filter="all_resources"
+include_filter=""
+exclude_filter=""
+export_path="exports/lab-electrolyte.exe"
+patches=PackedStringArray()
+encryption_include_filters=""
+encryption_exclude_filters=""
+seed=0
+encrypt_pck=false
+encrypt_directory=false
+script_export_mode=2
+
+[preset.0.options]
+
+custom_template/debug=""
+custom_template/release=""
+debug/export_console_wrapper=1
+binary_format/embed_pck=true
+texture_format/s3tc_bptc=true
+texture_format/etc2_astc=false
+shader_baker/enabled=false
+binary_format/architecture="x86_64"
+codesign/enable=false
+codesign/timestamp=true
+codesign/timestamp_server_url=""
+codesign/digest_algorithm=1
+codesign/description=""
+codesign/custom_options=PackedStringArray()
+application/modify_resources=true
+application/icon=""
+application/console_wrapper_icon=""
+application/icon_interpolation=4
+application/file_version=""
+application/product_version=""
+application/company_name=""
+application/product_name=""
+application/file_description=""
+application/copyright=""
+application/trademarks=""
+application/export_angle=0
+application/export_d3d12=0
+application/d3d12_agility_sdk_multiarch=true
+ssh_remote_deploy/enabled=false
+ssh_remote_deploy/host="user@host_ip"
+ssh_remote_deploy/port="22"
+ssh_remote_deploy/extra_args_ssh=""
+ssh_remote_deploy/extra_args_scp=""
+ssh_remote_deploy/run_script="Expand-Archive -LiteralPath '{temp_dir}\\{archive_name}' -DestinationPath '{temp_dir}'
+$action = New-ScheduledTaskAction -Execute '{temp_dir}\\{exe_name}' -Argument '{cmd_args}'
+$trigger = New-ScheduledTaskTrigger -Once -At 00:00
+$settings = New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries -DontStopIfGoingOnBatteries
+$task = New-ScheduledTask -Action $action -Trigger $trigger -Settings $settings
+Register-ScheduledTask godot_remote_debug -InputObject $task -Force:$true
+Start-ScheduledTask -TaskName godot_remote_debug
+while (Get-ScheduledTask -TaskName godot_remote_debug | ? State -eq running) { Start-Sleep -Milliseconds 100 }
+Unregister-ScheduledTask -TaskName godot_remote_debug -Confirm:$false -ErrorAction:SilentlyContinue"
+ssh_remote_deploy/cleanup_script="Stop-ScheduledTask -TaskName godot_remote_debug -ErrorAction:SilentlyContinue
+Unregister-ScheduledTask -TaskName godot_remote_debug -Confirm:$false -ErrorAction:SilentlyContinue
+Remove-Item -Recurse -Force '{temp_dir}'"
diff --git a/exports/lab-electrolyte.console.exe b/exports/lab-electrolyte.console.exe
new file mode 100644
index 0000000..12c15ae
Binary files /dev/null and b/exports/lab-electrolyte.console.exe differ
diff --git a/exports/lab-electrolyte.exe b/exports/lab-electrolyte.exe
new file mode 100644
index 0000000..16fce76
Binary files /dev/null and b/exports/lab-electrolyte.exe differ
diff --git a/exports/test.zip b/exports/test.zip
new file mode 100644
index 0000000..c035e75
Binary files /dev/null and b/exports/test.zip differ
diff --git a/project.godot b/project.godot
index 7b834a6..1af40d1 100644
--- a/project.godot
+++ b/project.godot
@@ -18,6 +18,7 @@ config/icon="res://icon.svg"
 [autoload]
 
 GuiSignalBus="*res://src/gui_signal_bus.gd"
+ReactionRegistry="*res://src/reaction_registry.gd"
 
 [input]
 
@@ -31,6 +32,7 @@ drag_camera={
 
 3d_physics/layer_1="Drag"
 3d_physics/layer_2="Interaction"
+3d_physics/layer_3="FlaskInteraction"
 
 [rendering]
 
diff --git a/scenes/drag_and_drop.tscn b/scenes/drag_and_drop.tscn
new file mode 100644
index 0000000..75eee86
--- /dev/null
+++ b/scenes/drag_and_drop.tscn
@@ -0,0 +1,14 @@
+[gd_scene load_steps=2 format=3 uid="uid://vhn8h4mhb6nh"]
+
+[ext_resource type="Script" uid="uid://ds5u02jdtxyd4" path="res://src/ui/drag_and_drop.gd" id="1_33df7"]
+
+[node name="DragAndDrop" type="Button"]
+anchors_preset = -1
+anchor_right = 0.043
+anchor_bottom = 0.07700001
+offset_right = 0.4639969
+offset_bottom = 0.10399628
+mouse_filter = 1
+script = ExtResource("1_33df7")
+
+[connection signal="button_down" from="." to="." method="_on_button_down"]
diff --git a/scenes/draggable_object.tscn b/scenes/flask.tscn
similarity index 63%
rename from scenes/draggable_object.tscn
rename to scenes/flask.tscn
index c8ba9c7..ede41ea 100644
--- a/scenes/draggable_object.tscn
+++ b/scenes/flask.tscn
@@ -1,46 +1,61 @@
-[gd_scene load_steps=9 format=3 uid="uid://bjxjcx2qu16q5"]
+[gd_scene load_steps=11 format=3 uid="uid://bjxjcx2qu16q5"]
 
-[ext_resource type="Script" uid="uid://bjnv2g1ni0525" path="res://src/drag/draggable_object.gd" id="1_vcwhe"]
-[ext_resource type="Script" uid="uid://ctu7escah5lo1" path="res://src/interactible/interaction_source.gd" id="2_627mb"]
-[ext_resource type="PackedScene" uid="uid://b6ydpkle2ol20" path="res://assets/models/FlaskNew.glb" id="2_qf1og"]
-[ext_resource type="Script" uid="uid://e8xu57ewvb5a" path="res://src/interactible/proximity_rotator.gd" id="3_00eeh"]
-[ext_resource type="Script" uid="uid://b1gv6dt8bwj2p" path="res://src/interactible/returner.gd" id="5_bqclg"]
-[ext_resource type="Script" uid="uid://dteb2xxl8gixp" path="res://src/ui/slider_display.gd" id="5_qb0nw"]
+[ext_resource type="Script" uid="uid://bjnv2g1ni0525" path="res://src/drag/draggable_object.gd" id="1_0xufn"]
+[ext_resource type="PackedScene" uid="uid://b6ydpkle2ol20" path="res://assets/models/FlaskNew.glb" id="2_h7awq"]
+[ext_resource type="Script" uid="uid://mjx50qh1bwv3" path="res://src/interactible/interaction_reciever.gd" id="3_ailwx"]
+[ext_resource type="Script" uid="uid://ctu7escah5lo1" path="res://src/interactible/interaction_source.gd" id="4_kkw7a"]
+[ext_resource type="Script" uid="uid://e8xu57ewvb5a" path="res://src/interactible/proximity_rotator.gd" id="5_rqua0"]
+[ext_resource type="Script" uid="uid://dteb2xxl8gixp" path="res://src/ui/slider_display.gd" id="6_wadb5"]
 
 [sub_resource type="CapsuleShape3D" id="CapsuleShape3D_vcwhe"]
 radius = 0.1
 height = 0.9921875
 
+[sub_resource type="CylinderShape3D" id="CylinderShape3D_0xufn"]
+height = 0.16210938
+radius = 0.625
+
 [sub_resource type="SphereShape3D" id="SphereShape3D_vcwhe"]
 radius = 0.49649125
 
-[node name="DraggableObject" type="Area3D"]
-script = ExtResource("1_vcwhe")
+[sub_resource type="Curve" id="Curve_qb0nw"]
+_data = [Vector2(0, 0), 0.0, 0.067761436, 0, 0, Vector2(0.75, 1), 0.0, 0.0, 0, 0]
+point_count = 2
+
+[node name="Flask" type="Area3D"]
+script = ExtResource("1_0xufn")
 
 [node name="DragArea" type="CollisionShape3D" parent="."]
 shape = SubResource("CapsuleShape3D_vcwhe")
 
-[node name="FlaskNew" parent="." instance=ExtResource("2_qf1og")]
+[node name="FlaskNew" parent="." instance=ExtResource("2_h7awq")]
 transform = Transform3D(0.1, 0, 0, 0, 0.1, 0, 0, 0, 0.1, 0, -0.38859487, 0)
 
+[node name="InteractibleArea" type="Area3D" parent="."]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0.6011598, 0)
+collision_layer = 6
+collision_mask = 0
+script = ExtResource("3_ailwx")
+metadata/_custom_type_script = "uid://mjx50qh1bwv3"
+
+[node name="CollisionShape3D" type="CollisionShape3D" parent="InteractibleArea"]
+shape = SubResource("CylinderShape3D_0xufn")
+
 [node name="InteractionArea" type="Area3D" parent="." node_paths=PackedStringArray("interaction_dialog")]
 collision_layer = 2
 collision_mask = 2
 input_ray_pickable = false
-script = ExtResource("2_627mb")
+script = ExtResource("4_kkw7a")
 interaction_dialog = NodePath("../InteractionDialog")
 
 [node name="InteractionArea" type="CollisionShape3D" parent="InteractionArea"]
 shape = SubResource("SphereShape3D_vcwhe")
 
 [node name="ProximityRotator" type="Node" parent="." node_paths=PackedStringArray("rotated")]
-script = ExtResource("3_00eeh")
+script = ExtResource("5_rqua0")
 rotated = NodePath("..")
-proximity_radius = 0.746
-
-[node name="Returner" type="Node" parent="." node_paths=PackedStringArray("node")]
-script = ExtResource("5_bqclg")
-node = NodePath("..")
+proximity_radius = 0.1
+modification_curve = SubResource("Curve_qb0nw")
 
 [node name="InteractionDialog" type="ConfirmationDialog" parent="."]
 oversampling_override = 1.0
@@ -56,14 +71,14 @@ offset_bottom = 82.0
 
 [node name="Label" type="Label" parent="InteractionDialog/VBoxContainer"]
 layout_mode = 2
-text = "Введите объём"
+text = "Введите количество"
 
 [node name="HBoxContainer" type="HBoxContainer" parent="InteractionDialog/VBoxContainer"]
 layout_mode = 2
 
 [node name="AmountLabel" type="Label" parent="InteractionDialog/VBoxContainer/HBoxContainer" node_paths=PackedStringArray("slider")]
 layout_mode = 2
-script = ExtResource("5_qb0nw")
+script = ExtResource("6_wadb5")
 slider = NodePath("../HSlider")
 suffix = "%"
 
@@ -72,6 +87,5 @@ layout_mode = 2
 size_flags_horizontal = 3
 
 [connection signal="drag_ended" from="." to="InteractionArea" method="request_interaction"]
-[connection signal="interaction_closed" from="InteractionArea" to="Returner" method="return_to_start"]
 [connection signal="interaction_reciever_entered" from="InteractionArea" to="ProximityRotator" method="_on_interaction_area_interaction_reciever_entered"]
 [connection signal="interaction_reciever_exited" from="InteractionArea" to="ProximityRotator" method="_on_interaction_area_interaction_reciever_exited"]
diff --git a/scenes/interactible_object.tscn b/scenes/interactible_object.tscn
index d88bab7..0feef0d 100644
--- a/scenes/interactible_object.tscn
+++ b/scenes/interactible_object.tscn
@@ -11,7 +11,7 @@ cap_top = false
 
 [sub_resource type="CylinderShape3D" id="CylinderShape3D_auicg"]
 height = 0.7128906
-radius = 0.75
+radius = 0.49804688
 
 [node name="InteractibleObject" type="Area3D"]
 collision_layer = 2
diff --git a/scenes/lab.tscn b/scenes/lab.tscn
index 59a6ff3..e42d252 100644
--- a/scenes/lab.tscn
+++ b/scenes/lab.tscn
@@ -1,9 +1,12 @@
-[gd_scene load_steps=6 format=3 uid="uid://c7r4rhgj3ucao"]
+[gd_scene load_steps=9 format=3 uid="uid://c7r4rhgj3ucao"]
 
-[ext_resource type="PackedScene" uid="uid://bjxjcx2qu16q5" path="res://scenes/draggable_object.tscn" id="1_bb6uc"]
+[ext_resource type="PackedScene" uid="uid://bjxjcx2qu16q5" path="res://scenes/flask.tscn" id="1_bb6uc"]
 [ext_resource type="Script" uid="uid://crjao0jjv5yqs" path="res://src/drag/draggable_camera.gd" id="1_hem3r"]
 [ext_resource type="PackedScene" uid="uid://dfxlr4svnsdyx" path="res://scenes/ui.tscn" id="3_hflkp"]
-[ext_resource type="PackedScene" uid="uid://q1y0r2rn0qb4" path="res://scenes/interactible_object.tscn" id="4_f680m"]
+[ext_resource type="PackedScene" uid="uid://bx5wihgk668w1" path="res://assets/models/Chemistry.glb" id="5_q4uld"]
+[ext_resource type="PackedScene" uid="uid://bg8y4u2a4hx3p" path="res://assets/models/Drip.glb" id="6_gipex"]
+[ext_resource type="PackedScene" uid="uid://dwtaqdacgcysa" path="res://assets/models/FlaskHolder.glb" id="7_064jp"]
+[ext_resource type="Environment" uid="uid://clgblxkcf822n" path="res://assets/Environment.tres" id="8_4kvtl"]
 
 [sub_resource type="BoxMesh" id="BoxMesh_cbcd7"]
 size = Vector3(3.535, 1, 1)
@@ -11,23 +14,36 @@ size = Vector3(3.535, 1, 1)
 [node name="Lab" type="Node3D"]
 
 [node name="MeshInstance3D" type="MeshInstance3D" parent="."]
+transform = Transform3D(2.4088485, 0, 0, 0, 1, 0, 0, 0, 2.8214846, 0, 0, 0)
 mesh = SubResource("BoxMesh_cbcd7")
 
 [node name="Camera3D" type="Camera3D" parent="."]
 transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, -1.236948, 0.9448395, 1.8294222)
 script = ExtResource("1_hem3r")
 
-[node name="DraggableObject" parent="." instance=ExtResource("1_bb6uc")]
-transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, -1.7153518, 0.9448395, 0.0039073825)
+[node name="Flask" parent="." instance=ExtResource("1_bb6uc")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, -1.6518283, 1.0920403, 0.0039073825)
+
+[node name="Flask2" parent="." instance=ExtResource("1_bb6uc")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, -3.542716, 1.0920403, 0.20219529)
 
 [node name="DirectionalLight3D" type="DirectionalLight3D" parent="."]
 transform = Transform3D(1, 0, 0, 0, 0.8403207, 0.5420896, 0, -0.5420896, 0.8403207, 0, 1.9293891, 0)
 shadow_enabled = true
 
-[node name="InteractibleObject" parent="." instance=ExtResource("4_f680m")]
-transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, -0.11957906, 0.87858754, -0.0035084486)
-
 [node name="UI" type="CanvasLayer" parent="."]
 layer = 100
 
 [node name="UserInterface" parent="UI" instance=ExtResource("3_hflkp")]
+
+[node name="Chemistry" parent="." instance=ExtResource("5_q4uld")]
+transform = Transform3D(-1.0927847e-08, 0, -0.25, 0, 0.25, 0, 0.25, 0, -1.0927847e-08, -3.030859, 0.55043614, -0.9607215)
+
+[node name="Drip2" parent="." instance=ExtResource("6_gipex")]
+transform = Transform3D(0.25, 0, 0, 0, 0.25, 0, 0, 0, 0.25, 1.3666252, 0.06701976, 0.014619827)
+
+[node name="FlaskHolder2" parent="." instance=ExtResource("7_064jp")]
+transform = Transform3D(0.09002048, 0, -0.04354668, 0, 0.1, 0, 0.04354668, 0, 0.09002048, -3.3602376, 1.0968089, 0.2888375)
+
+[node name="WorldEnvironment" type="WorldEnvironment" parent="."]
+environment = ExtResource("8_4kvtl")
diff --git a/scenes/popup_container.tscn b/scenes/popup_container.tscn
new file mode 100644
index 0000000..caed730
--- /dev/null
+++ b/scenes/popup_container.tscn
@@ -0,0 +1,46 @@
+[gd_scene load_steps=2 format=3 uid="uid://bcj0mesdlfsfj"]
+
+[ext_resource type="Script" uid="uid://c4tsyohkw45p4" path="res://src/ui/popup_container.gd" id="1_xul1r"]
+
+[node name="PopupContainer" type="Panel"]
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+offset_right = 25.0
+grow_horizontal = 2
+grow_vertical = 2
+script = ExtResource("1_xul1r")
+
+[node name="ScrollContainer" type="ScrollContainer" parent="."]
+layout_mode = 1
+anchors_preset = -1
+anchor_right = 0.97900003
+anchor_bottom = 1.0
+offset_right = -0.28308105
+grow_horizontal = 2
+grow_vertical = 2
+horizontal_scroll_mode = 0
+
+[node name="VBoxContainer" type="VBoxContainer" parent="ScrollContainer"]
+layout_mode = 2
+size_flags_horizontal = 3
+size_flags_vertical = 3
+
+[node name="Label" type="Label" parent="."]
+layout_mode = 1
+anchors_preset = -1
+anchor_left = 1.0
+anchor_top = 0.0014401659
+anchor_right = 1.0
+anchor_bottom = 1.0
+offset_left = -25.0
+offset_top = 647.0668
+offset_right = 622.0668
+offset_bottom = 49.0
+grow_vertical = 2
+rotation = -1.5707964
+text = "Инструменты
+"
+horizontal_alignment = 1
+vertical_alignment = 1
+metadata/_edit_use_anchors_ = true
diff --git a/scenes/reactives_drag_and_drop.tscn b/scenes/reactives_drag_and_drop.tscn
new file mode 100644
index 0000000..c4d394a
--- /dev/null
+++ b/scenes/reactives_drag_and_drop.tscn
@@ -0,0 +1,14 @@
+[gd_scene load_steps=2 format=3 uid="uid://blj2j7a4uyr05"]
+
+[ext_resource type="Script" uid="uid://b2w4adq02ywrl" path="res://src/ui/reagent_drag_and_drop.gd" id="1_1whj1"]
+
+[node name="DragAndDrop" type="Button"]
+anchors_preset = -1
+anchor_right = 0.043
+anchor_bottom = 0.07700001
+offset_right = 0.4639969
+offset_bottom = 0.10399628
+mouse_filter = 1
+script = ExtResource("1_1whj1")
+
+[connection signal="button_down" from="." to="." method="_on_button_down"]
diff --git a/scenes/substance_jar.tscn b/scenes/substance_jar.tscn
new file mode 100644
index 0000000..fa47b90
--- /dev/null
+++ b/scenes/substance_jar.tscn
@@ -0,0 +1,85 @@
+[gd_scene load_steps=10 format=3 uid="uid://cw6v8kbi76qak"]
+
+[ext_resource type="Script" uid="uid://bjnv2g1ni0525" path="res://src/drag/draggable_object.gd" id="1_o7vug"]
+[ext_resource type="ArrayMesh" uid="uid://dddqboph2ygmw" path="res://assets/meshes/jar.res" id="2_o7vug"]
+[ext_resource type="Script" uid="uid://ctu7escah5lo1" path="res://src/interactible/interaction_source.gd" id="3_00jpx"]
+[ext_resource type="Script" uid="uid://e8xu57ewvb5a" path="res://src/interactible/proximity_rotator.gd" id="4_ymvgp"]
+[ext_resource type="ArrayMesh" uid="uid://dxeseuqcwne1m" path="res://assets/meshes/jar_fill.res" id="6_kfk5m"]
+[ext_resource type="Script" uid="uid://co33kqhl3n06u" path="res://src/interactible/destructor.gd" id="7_00jpx"]
+
+[sub_resource type="CylinderShape3D" id="CylinderShape3D_kfk5m"]
+height = 0.5024414
+radius = 0.22460938
+
+[sub_resource type="SphereShape3D" id="SphereShape3D_vcwhe"]
+radius = 0.49649125
+
+[sub_resource type="Curve" id="Curve_qb0nw"]
+_data = [Vector2(0, 0), 0.0, 0.067761436, 0, 0, Vector2(0.75, 1), 0.0, 0.0, 0, 0]
+point_count = 2
+
+[node name="Flask" type="Area3D"]
+script = ExtResource("1_o7vug")
+
+[node name="Jar" type="MeshInstance3D" parent="."]
+transform = Transform3D(0.2, 0, 0, 0, 0.2, 0, 0, 0, 0.2, 0, -0.20877336, 0)
+mesh = ExtResource("2_o7vug")
+
+[node name="DragArea" type="CollisionShape3D" parent="."]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0.04284668, 0)
+shape = SubResource("CylinderShape3D_kfk5m")
+
+[node name="InteractionArea" type="Area3D" parent="." node_paths=PackedStringArray("interaction_dialog")]
+collision_layer = 4
+collision_mask = 4
+input_ray_pickable = false
+script = ExtResource("3_00jpx")
+interaction_dialog = NodePath("../InteractionDialog")
+
+[node name="InteractionArea" type="CollisionShape3D" parent="InteractionArea"]
+shape = SubResource("SphereShape3D_vcwhe")
+
+[node name="ProximityRotator" type="Node" parent="." node_paths=PackedStringArray("rotated")]
+script = ExtResource("4_ymvgp")
+rotated = NodePath("..")
+proximity_radius = 0.1
+modification_curve = SubResource("Curve_qb0nw")
+
+[node name="InteractionDialog" type="ConfirmationDialog" parent="."]
+oversampling_override = 1.0
+position = Vector2i(0, 36)
+size = Vector2i(200, 131)
+borderless = true
+
+[node name="VBoxContainer" type="VBoxContainer" parent="InteractionDialog"]
+offset_left = 8.0
+offset_top = 8.0
+offset_right = 192.0
+offset_bottom = 82.0
+
+[node name="Label" type="Label" parent="InteractionDialog/VBoxContainer"]
+layout_mode = 2
+text = "Введите объём"
+
+[node name="HBoxContainer" type="HBoxContainer" parent="InteractionDialog/VBoxContainer"]
+layout_mode = 2
+
+[node name="SpinBox" type="SpinBox" parent="InteractionDialog/VBoxContainer/HBoxContainer"]
+layout_mode = 2
+max_value = 10.0
+step = 0.01
+allow_greater = true
+suffix = "мг"
+
+[node name="MeshInstance3D" type="MeshInstance3D" parent="."]
+transform = Transform3D(0.2, 0, 0, 0, 0.2, 0, 0, 0, 0.2, 0, -0.20759426, 0)
+mesh = ExtResource("6_kfk5m")
+
+[node name="DestructorOnStop" type="Node" parent="." node_paths=PackedStringArray("node")]
+script = ExtResource("7_00jpx")
+node = NodePath("..")
+
+[connection signal="drag_ended" from="." to="InteractionArea" method="request_interaction"]
+[connection signal="interaction_closed" from="InteractionArea" to="DestructorOnStop" method="destruct"]
+[connection signal="interaction_reciever_entered" from="InteractionArea" to="ProximityRotator" method="_on_interaction_area_interaction_reciever_entered"]
+[connection signal="interaction_reciever_exited" from="InteractionArea" to="ProximityRotator" method="_on_interaction_area_interaction_reciever_exited"]
diff --git a/scenes/ui.tscn b/scenes/ui.tscn
index e875262..d040142 100644
--- a/scenes/ui.tscn
+++ b/scenes/ui.tscn
@@ -1,4 +1,9 @@
-[gd_scene format=3 uid="uid://dfxlr4svnsdyx"]
+[gd_scene load_steps=5 format=3 uid="uid://dfxlr4svnsdyx"]
+
+[ext_resource type="PackedScene" uid="uid://bcj0mesdlfsfj" path="res://scenes/popup_container.tscn" id="1_nt7q6"]
+[ext_resource type="Script" uid="uid://c5pv2idedy1oy" path="res://src/ui/reagents_gen.gd" id="2_x4jx1"]
+[ext_resource type="PackedScene" uid="uid://vhn8h4mhb6nh" path="res://scenes/drag_and_drop.tscn" id="3_yev5y"]
+[ext_resource type="Resource" uid="uid://cay05wpketmny" path="res://assets/draggables/test_draggable.tres" id="4_gdt2y"]
 
 [node name="UserInterface" type="Control"]
 layout_mode = 3
@@ -17,6 +22,36 @@ anchor_right = 1.0
 offset_bottom = 31.0
 grow_horizontal = 2
 deselect_enabled = true
-tab_count = 2
-tab_0/title = "Реагенты"
-tab_1/title = "Отчёт"
+tab_count = 3
+tab_0/title = "Ход работы"
+tab_1/title = "Вопросы для самопроверки"
+tab_2/title = "Отчёт"
+
+[node name="Reagents" parent="." instance=ExtResource("1_nt7q6")]
+layout_mode = 1
+anchors_preset = -1
+anchor_left = -0.14756945
+anchor_top = 0.047839507
+anchor_right = 0.0
+anchor_bottom = 0.69753087
+text = "Вещества"
+metadata/_edit_use_anchors_ = true
+
+[node name="Generator" type="Node" parent="Reagents"]
+script = ExtResource("2_x4jx1")
+
+[node name="Intruments" parent="." instance=ExtResource("1_nt7q6")]
+layout_mode = 1
+anchors_preset = -1
+anchor_left = -0.14756945
+anchor_top = 0.69753087
+anchor_right = 0.0
+text = "Инструменты"
+metadata/_edit_use_anchors_ = true
+
+[node name="DragAndDrop" parent="Intruments/ScrollContainer/VBoxContainer" index="0" instance=ExtResource("3_yev5y")]
+layout_mode = 2
+text = "Пробирка"
+draggable = ExtResource("4_gdt2y")
+
+[editable path="Intruments"]
diff --git a/src/drag/draggable_object.gd b/src/drag/draggable_object.gd
index b35b208..b4434fe 100644
--- a/src/drag/draggable_object.gd
+++ b/src/drag/draggable_object.gd
@@ -14,7 +14,7 @@ func _mouse_enter() -> void:
 func _mouse_exit() -> void:
 	mouse_in = false
 
-func _process(delta: float) -> void:
+func _process(_delta: float) -> void:
 	if dragged == false:
 		return
 	var camera: Camera3D = get_viewport().get_camera_3d()
diff --git a/src/interactible/destructor.gd b/src/interactible/destructor.gd
new file mode 100644
index 0000000..332e2e6
--- /dev/null
+++ b/src/interactible/destructor.gd
@@ -0,0 +1,6 @@
+extends Node
+
+@export var node: Node3D
+
+func destruct() -> void:
+	node.queue_free()
diff --git a/src/interactible/destructor.gd.uid b/src/interactible/destructor.gd.uid
new file mode 100644
index 0000000..763f7f6
--- /dev/null
+++ b/src/interactible/destructor.gd.uid
@@ -0,0 +1 @@
+uid://co33kqhl3n06u
diff --git a/src/interactible/proximity_rotator.gd b/src/interactible/proximity_rotator.gd
index 222e380..3000d9f 100644
--- a/src/interactible/proximity_rotator.gd
+++ b/src/interactible/proximity_rotator.gd
@@ -2,9 +2,13 @@ extends Node
 
 @export var rotated: Node3D
 @export var proximity_radius: float
-@onready var start_rotation = rotated.quaternion
+@export var modification_curve: Curve
+var start_rotation
 var reciever: InteractionReciever
 
+func _ready() -> void:
+	start_rotation =  rotated.quaternion
+
 func _on_interaction_area_interaction_reciever_entered(rec: InteractionReciever) -> void:
 	if reciever == null:
 		reciever = rec
@@ -23,5 +27,6 @@ func _process(_delta: float) -> void:
 	var camera: Camera3D = get_viewport().get_camera_3d()
 	var rotation_direction : float = -sign(camera.basis.x.dot(reciever.global_position - rotated.global_position))
 	var result_quaternion: Quaternion = Quaternion(-camera.basis.z,PI + 1.5707963267948966 * rotation_direction)
-	var calculated_angle: Quaternion = start_rotation.slerp(result_quaternion,clamp(proximity_radius/rotated.global_position.distance_to(reciever.global_position),0,1))
+	var distance_without_y: float = Vector2(rotated.global_position.x,rotated.global_position.z).distance_to(Vector2(reciever.global_position.x,reciever.global_position.z))
+	var calculated_angle: Quaternion = start_rotation.slerp(result_quaternion,modification_curve.sample(clamp(proximity_radius/distance_without_y,0,1)))
 	rotated.quaternion = calculated_angle
diff --git a/src/reaction_registry.gd b/src/reaction_registry.gd
new file mode 100644
index 0000000..fd89583
--- /dev/null
+++ b/src/reaction_registry.gd
@@ -0,0 +1,23 @@
+extends Node
+
+const REACTIONS_DIRECTORY = "res://assets/reactions/"
+
+var reactions: Array[Reaction]
+
+func _ready() -> void:
+	for file in ResourceLoader.list_directory(REACTIONS_DIRECTORY):
+		reactions.append(load(REACTIONS_DIRECTORY + file))
+
+func react(input_substances: Array[Substance], temperature: float) -> Array[Substance]:
+	var filter_func: Callable = func(reaction: Reaction) -> bool:
+		if reaction.reaction_temperature != -1:
+			return (reaction.input_substances == input_substances) and temperature >= reaction.reaction_temperature
+		else:
+			return reaction.input_substances == input_substances
+	
+	var filtered: Array[Reaction] = reactions.filter(filter_func)
+	
+	if len(filtered) > 0:
+		return filtered[0].output_substances.duplicate()
+	else:
+		return []
diff --git a/src/reaction_registry.gd.uid b/src/reaction_registry.gd.uid
new file mode 100644
index 0000000..3772c28
--- /dev/null
+++ b/src/reaction_registry.gd.uid
@@ -0,0 +1 @@
+uid://j6vy1offobyq
diff --git a/src/resources/draggable.gd b/src/resources/draggable.gd
new file mode 100644
index 0000000..8de9bbb
--- /dev/null
+++ b/src/resources/draggable.gd
@@ -0,0 +1,7 @@
+
+extends Resource
+
+class_name Draggable
+
+@export var scene_to_spawn: PackedScene
+@export var icon: Texture2D
diff --git a/src/resources/draggable.gd.uid b/src/resources/draggable.gd.uid
new file mode 100644
index 0000000..cdeb715
--- /dev/null
+++ b/src/resources/draggable.gd.uid
@@ -0,0 +1 @@
+uid://b3i73cilpra74
diff --git a/src/resources/reaction.gd b/src/resources/reaction.gd
new file mode 100644
index 0000000..7a5d3c2
--- /dev/null
+++ b/src/resources/reaction.gd
@@ -0,0 +1,7 @@
+extends Resource
+
+class_name Reaction
+
+@export var input_substances: Array[Substance]
+@export var output_substances: Array[Substance]
+@export var reaction_temperature: float = -1
diff --git a/src/resources/reaction.gd.uid b/src/resources/reaction.gd.uid
new file mode 100644
index 0000000..d6e2554
--- /dev/null
+++ b/src/resources/reaction.gd.uid
@@ -0,0 +1 @@
+uid://dwks86y6383p4
diff --git a/src/resources/reagent.gd b/src/resources/reagent.gd
new file mode 100644
index 0000000..5d67384
--- /dev/null
+++ b/src/resources/reagent.gd
@@ -0,0 +1,6 @@
+extends Resource
+
+class_name Reagent
+
+@export var substance: Substance
+@export var storage: PackedScene = preload("res://scenes/substance_jar.tscn")
diff --git a/src/resources/reagent.gd.uid b/src/resources/reagent.gd.uid
new file mode 100644
index 0000000..758b1bb
--- /dev/null
+++ b/src/resources/reagent.gd.uid
@@ -0,0 +1 @@
+uid://bditqax8ibmxw
diff --git a/src/resources/substance.gd b/src/resources/substance.gd
new file mode 100644
index 0000000..40f17fb
--- /dev/null
+++ b/src/resources/substance.gd
@@ -0,0 +1,13 @@
+extends Resource
+
+class_name Substance
+
+@export var formula: StringName
+@export var scientific_name: StringName
+@export var melting_point: float
+@export var boiling_point: float
+@export var color: Color
+@export var prefer_scientific_name: bool
+
+func get_formula() -> StringName:
+	return scientific_name if prefer_scientific_name else formula
diff --git a/src/resources/substance.gd.uid b/src/resources/substance.gd.uid
new file mode 100644
index 0000000..ab24127
--- /dev/null
+++ b/src/resources/substance.gd.uid
@@ -0,0 +1 @@
+uid://b8q5buwgvppyh
diff --git a/src/ui/drag_and_drop.gd b/src/ui/drag_and_drop.gd
new file mode 100644
index 0000000..66d5a80
--- /dev/null
+++ b/src/ui/drag_and_drop.gd
@@ -0,0 +1,13 @@
+extends Button
+
+
+@export var draggable: Draggable
+
+func _on_button_down() -> void:
+	var scene = draggable.scene_to_spawn.instantiate()
+	if scene is DraggableObject:
+		scene.dragged = true
+		scene.mouse_in = true
+	get_tree().current_scene.add_child(scene)
+	var camera = get_viewport().get_camera_3d()
+	scene.global_position = camera.project_position(get_global_mouse_position(),1.8)
diff --git a/src/ui/drag_and_drop.gd.uid b/src/ui/drag_and_drop.gd.uid
new file mode 100644
index 0000000..008476a
--- /dev/null
+++ b/src/ui/drag_and_drop.gd.uid
@@ -0,0 +1 @@
+uid://ds5u02jdtxyd4
diff --git a/src/ui/popup_container.gd b/src/ui/popup_container.gd
new file mode 100644
index 0000000..631e52e
--- /dev/null
+++ b/src/ui/popup_container.gd
@@ -0,0 +1,34 @@
+extends Control
+
+@export var show_animation_time: float = 0.25
+@export var text: String = ""
+
+var tween: Tween
+@onready var default_left_anchor: float = anchor_left
+@onready var default_right_anchor: float = anchor_right
+
+func _ready() -> void:
+	mouse_entered.connect(show_menu)
+	mouse_exited.connect(hide_menu)
+	$Label.text = text
+
+func show_menu() -> void:
+	if tween:
+		tween.kill()
+	
+	tween = create_tween()
+	tween.tween_property(self,"anchor_right",default_right_anchor + abs(default_left_anchor),show_animation_time)
+	tween.parallel()
+	tween.tween_property(self,"anchor_left",default_right_anchor,show_animation_time)
+
+func hide_menu() -> void:
+	if tween:
+		tween.kill()
+	
+	tween = create_tween()
+	tween.tween_property(self,"anchor_right",default_right_anchor,show_animation_time)
+	tween.parallel()
+	tween.tween_property(self,"anchor_left",default_left_anchor,show_animation_time)
+
+func add_element(node: Node):
+	$ScrollContainer/VBoxContainer.add_child(node)
diff --git a/src/ui/popup_container.gd.uid b/src/ui/popup_container.gd.uid
new file mode 100644
index 0000000..270a083
--- /dev/null
+++ b/src/ui/popup_container.gd.uid
@@ -0,0 +1 @@
+uid://c4tsyohkw45p4
diff --git a/src/ui/reagent_drag_and_drop.gd b/src/ui/reagent_drag_and_drop.gd
new file mode 100644
index 0000000..f8628c7
--- /dev/null
+++ b/src/ui/reagent_drag_and_drop.gd
@@ -0,0 +1,16 @@
+extends Button
+
+
+var reagent: Reagent
+
+func _ready() -> void:
+	text = reagent.substance.get_formula()
+
+func _on_button_down() -> void:
+	var scene = reagent.storage.instantiate()
+	if scene is DraggableObject:
+		scene.dragged = true
+		scene.mouse_in = true
+	get_tree().current_scene.add_child(scene)
+	var camera = get_viewport().get_camera_3d()
+	scene.global_position = camera.project_position(get_global_mouse_position(),1.8)
diff --git a/src/ui/reagent_drag_and_drop.gd.uid b/src/ui/reagent_drag_and_drop.gd.uid
new file mode 100644
index 0000000..66fd3cd
--- /dev/null
+++ b/src/ui/reagent_drag_and_drop.gd.uid
@@ -0,0 +1 @@
+uid://b2w4adq02ywrl
diff --git a/src/ui/reagents_gen.gd b/src/ui/reagents_gen.gd
new file mode 100644
index 0000000..d20345e
--- /dev/null
+++ b/src/ui/reagents_gen.gd
@@ -0,0 +1,12 @@
+extends Node
+
+const dnd_button = preload("res://scenes/reactives_drag_and_drop.tscn")
+const reagent_dir = "res://assets/reagents/"
+
+func _ready() -> void:
+	for file in ResourceLoader.list_directory(reagent_dir):
+		var button = dnd_button.instantiate()
+		button.reagent = load(reagent_dir+file)
+		get_parent().add_element.call_deferred(button)
+	
+	
diff --git a/src/ui/reagents_gen.gd.uid b/src/ui/reagents_gen.gd.uid
new file mode 100644
index 0000000..aa053ed
--- /dev/null
+++ b/src/ui/reagents_gen.gd.uid
@@ -0,0 +1 @@
+uid://c5pv2idedy1oy