How to make a Lava Lamp

Aim: To make a lava lamp.

What you need:

Food dye (Colour of choice)

150mls of water,

Vegetable oil

Alka-Seltzer tablets

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.

  1. Cool !

  2. Cool

  3. Great

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