Materials
- 10 ml graduated cylinder
- 6 % hydrogen peroxide
- Tweezers
- Paper discs (cut from coffee filters -1.0cm in diameter)
- Potato enzyme solution
- Ice, water of different temperatures
- Distilled water
- Chopstick
- Test tubes
- Vinegar
- Baking soda
- Thermometer
- Big bowls to make the water baths
- Timer
- pH strips
- Cheesecloth