Have you ever wanted to create your own lava lamp? According to “Science Guy” Jason Lindsey with Hooked on Science you can, and all you need are a few supplies and ingredients from the kitchen.
Plastic bottle with cap
STEP 1: Fill the plastic bottle three quarters of the way with vegetable oil.
STEP 2: Fill the plastic bottle the rest of the way with water.
STEP 3: Place several drops of food coloring into the plastic bottle.
STEP 4: Break the Alka-Seltzer tablet into two pieces.
STEP 5: Place each of the pieces of Alka-Seltzer tablet into the bottle.
This experiment proves water and oil don’t mix. The carbon dioxide gas created when you dropped the pieces of Alka-Seltzer tablets into the mixture causes the colored water blobs to push to the top through the oil.