What You Do: Fill the flask most of the way with vegetable oil. Fill the rest of the flask with water. Add a few drops of food coloring; your choice of color. Break an alka-seltzer tablet into a few small pieces, and drop them in the flask one at a time. Watch your lava lamp erupt into activity!
What to do. Pour the water into the bottle. Use a measuring cup or funnel to slowly pour the vegetable oil into the bottle until it's almost full. Add 10 drops of food coloring to the bottle (we like red, but any color will look great.) Break a seltzer tablet in half and drop the half tablet into the bottle.
How to: Fill the bottle a quarter full with water. Add a few drops of food colouring until you like the colour you see. You can add glitter too. Fill the bottle almost to the top with vegetable oil. Let the mixture separate. Break up two Alka-Seltzer tablets and drop them in the mixture. Watch your lava lamp bubble!
Using stuff you probably have lying around the kitchen, you and your family can make your very own lava lamp and learn a bit of science while doing it!
Inspire little scientists with just a few household ingredients and make your own awesome lava lamp!
It is a great idea to reuse a plastic soda bottle from a recycling bin (just wash it out before beginning the experiment). If making a large quantity of lava lamps you .