1. Natural pH Indicators: Test plant extracts like cabbage juice to identify acids and bases using simple color changes.
2. Plastic Recycling Process: Explore ways to recycle plastics chemically and analyze the impact on the environment.
3. Homemade Battery: Create a functional battery using everyday materials like lemons or potatoes and study energy generation.
4. Soap and Surface Tension: Investigate how different soaps affect water's surface tension through experiments with floating objects.
5. Chemical Volcano: Simulate a volcanic eruption using baking soda, vinegar, and dish soap, and explain the chemical reaction.
6. Water Purification: Design a basic filtration system and test its effectiveness in removing impurities from dirty water.
7. Electroplating Experiment: Use electrolysis to coat objects with metal, exploring applications in industries like jewelry.