Here are 25 Chemistry Working Model Ideas for Class 11 — simple, practical, and perfect for school exhibitions.
1. Atomic Structure 3D Model
Bohr model or quantum orbital shapes (s, p, d) with LEDs.
2. Periodic Table Working Model
Interactive table with lights showing groups, periods, metals/non-metals.
3. Chemical Bonding (Ionic & Covalent Bonds)
3D models using balls and sticks.
4. Hybridisation Models
sp, sp², sp³ models with geometry demonstration (linear, trigonal, tetrahedral).
5. States of Matter Demonstration
Ball-and-stick arrangement showing solid, liquid, gas movement.
6. Gas Laws (Boyle’s / Charles’ Law) Apparatus
Syringe-based setup showing pressure–volume relationship.
7. Separation Techniques Model
Distillation, filtration, sublimation apparatus.
8. pH Scale & Indicators Model
Paper indicator, natural indicators, pH chart.
9. Water Purifier (Sand + Charcoal)
Filtration model showing removal of impurities.
10. Electrolysis of Water
Splitting water into hydrogen and oxygen gases.
11. Crystallization Model
Simple supersaturated solution forming crystals.
12. Solubility Curve Demonstration
Water temperature vs solubility using sugar/salt.
13. Surface Chemistry – Adsorption by Charcoal
Charcoal absorbing dyes/ink.
14. Air Pollution Detector (Chemical Indicators)
NO₂/SO₂ detection using litmus or KI-starch paper.
15. Green Chemistry Model
Bio-plastic making from starch or potato.
16. Rate of Evaporation (Factors Affecting)
Surface area, temperature, airflow experiment.
17. Hard Water vs Soft Water Test
Soap lather comparison, water hardness indication.
18. Osmosis & Diffusion Model
Potato osmosis or egg osmosis demonstration.
19. Electrochemical Cell (Simple Battery)
Saltwater or lemon battery to light LEDs.
20. Law of Conservation of Mass Demonstration
Closed vessel reaction showing no change in mass.
21. Endothermic & Exothermic Reaction Model
Use of CaCl₂ (exo) and NH₄NO₃ (endo).
22. Colloids Model
Tyndall effect demonstration using a torch and milk solution.
23. Allotropy of Carbon
Models showing diamond, graphite, fullerene.
24. Isomerism Model (Chain, Position, Functional)
3D structures of organic molecules.
25. Acid Rain Working Model
SO₂ production + effect on metal, marble, plants.