Materials List: Breathing Cells

Each group needs:

To share with the entire class:

  • water
  • red cabbage indicator solution (Instructions: Chop a cabbage into small pieces and steep in boiling water for at least 10 minutes. Then, filter out the cabbage pieces using a coffee filter or tea strainer. You should be left with a bluish/purple solution at neutral pH.)
  • 4 clear different solutions to measure pH (examples: diluted lemon juice and/or vinegar, baking soda mixed with water, water, soda pop, etc.)
  • pH meter (if available) or pH paper strips (optional)
  • plastic gloves (optional)