1-2cupscanola or vegetable oil (less or more, depending on container size)
1-2tabletsAlka-Seltzer(broken into small pieces)
Instructions
Step 1: Add the liquids
Fill your container 1/4 of the way with water. We used 1/2 cup of water, but it will depend on the size of your container.
Add 8-10 drops of food colouring. Stir.
Fill the rest of your container with oil, leaving a bit of room at the top. Wait a moment for the oil to settle and separate from the water.
Step 2: Add Alka-Seltzer tablet
Break up your Alka-Seltzer tablet into small pieces.
Drop 2-4 pieces of Alka-Seltzer into your container.
Step 3: Be amazed!
Watch in amazement as your lava lamp comes to life! The reaction lasts between 1-3 minutes. Simply add more broken up Alka-Seltzer pieces to re-activate your lava lamp.Your lava lamp is complete!
Video
Notes
Break the Alka-Seltzer tablet into small pieces about 5-8mm wide. If you drop in the whole tablet it gets so fizzy that you can't see clear bubbles.