Here’s a comprehensive list of 25 chemistry science projects for Class 9 that cover various chemical concepts, ranging from everyday chemistry to advanced reactions.
These projects are practical, fun, and perfect for science fairs or classroom presentations.
1-5: Chemical Reactions and Changes
- Volcano Eruption Experiment – Baking soda + vinegar reaction.
- Elephant Toothpaste – Decomposition of hydrogen peroxide using yeast.
- Exothermic and Endothermic Reactions – Compare temperature changes in chemical reactions (e.g., vinegar + baking soda vs. quick lime + water).
- Rusting of Iron Nails – Study corrosion by changing environmental conditions.
- Burning Magnesium Ribbon – Observe oxidation and the formation of magnesium oxide.
6-10: Acids, Bases, and Indicators
- Red Cabbage pH Indicator – Test the pH of household solutions.
- Lemon Juice Invisible Ink – Write secret messages and reveal them with heat.
- Effect of Acid Rain on Metals – Place metals in acidic solutions to observe corrosion.
- Neutralization Reaction – Mix acids and bases to study salt formation.
- Homemade Litmus Paper – Create paper strips from flowers or beetroot to test pH.
11-15: Experiments with Gases
- Electrolysis of Water – Decompose water into hydrogen and oxygen using electricity.
- Carbon Dioxide Fire Extinguisher – Use vinegar and baking soda to create CO₂ and extinguish a candle.
- Oxygen Production from Hydrogen Peroxide – Decompose hydrogen peroxide with manganese dioxide.
- Limewater Test for CO₂ – Bubble exhaled air through limewater to confirm CO₂ presence.
- Air Pressure and Chemical Reactions – Use Alka-Seltzer tablets in a closed bottle to inflate balloons.
16-20: Polymers and Solutions
- Make Slime – Explore polymerization using glue and borax.
- Bouncing Ball Experiment – Create a rubbery polymer ball using borax and cornstarch.
- Supersaturation and Crystal Growth – Grow salt or sugar crystals.
- Oobleck: A Non-Newtonian Fluid – Create a fluid that acts as both liquid and solid.
- Colloids and Suspensions – Compare solutions, colloids, and suspensions using milk, saltwater, and muddy water.
21-25: Applied Chemistry Projects
- Soap vs. Detergent – Test cleaning power on greasy fabrics.
- Hard Water vs. Soft Water – Compare how soap lathers in both types of water.
- Biodegradable Plastic from Cornstarch – Create a simple plastic using cornstarch.
- Effect of Temperature on Solubility – Measure how solubility of sugar changes with temperature.
- Cooling Effects of Evaporation – Study how evaporation cools surfaces using alcohol and water.