What You’ll Need:
- Clear bottle(s)
- Water
- Oil
- Food Colour
- Alka Seltzer (or silimar effervescent tablet)
- Funnel
How To:
- Pour oil into your bottle – filling it about 2/3 of the way
- Pour water into your bottle – a little less than 1/3 to leave some room at the top
- Add food colouring of choice
- Observe what happens to the food colour
- Cut one Alka Seltzer (or similar) tablet into 8 pieces (you can use a larger piece if you have a big bottle)
- Add one piece of the effervescent tablet at a time and observe the reaction