You will need:
12-16 oz empty plastic bottle (preferable clear)
Vegetable oil
water
food color
Alka-seltzer tablets (1 package)
Directions:
Fill plastic bottle 3/4 full of vegetable oil.
Fill the rest of the way with water, leaving some space at the top.
Next, add 10-12 drops of food coloring (or more - the darker the better!)
Break the Alka-seltzer tablets into 8 pieces
Add 1 piece of tablet at a time - wait until completely dissolved until adding another
Once all the Alka-seltzer has been added & dissolved, put the lid back on and you have a cool 'lava lamp.'
Place a flashlight behind the bottle for a cooler effect.
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