How to make a Lava Lamp
Aim: To make a lava lamp.
What you need:
Food dye (Colour of choice)
150mls of water,
Empty 1 litre bottle
Step 1: Fill your bottle with 150 mls of water.
Step 2: Fill the rest if your bottle with the oil
Step 3: When the two liquds are separated add 10 drops of Food Colouring
Step 4: When water is your selected colour, break 1 Alka-Seltzer in half and add.
Step 5: Enjoy your home-made lava lamp
Gas was released into the bottle and the tablets created small bubbles in the water and they floated up to the top of the bottle. Then when it was more dense they would fall back down to the bottom and when the tablets where fully desolved then no more bubbles would be made.