Lava lamps are great ways to teach your children about density and polarity. It teaches your child that not all substances mix and everything in nature has a positive and negative pole. The poles could be explained further using protons, neutrons and electrons. The experiment is a fun way to introduce science to your child.
• 1 Flask or jar
• Food colouring
• Fizzy tablet / Sodium Bicarbonate
Fill the flask most of the way with vegetable oil and fill the rest of the flask with water. Add a few drops of any food colouring and add the white fizzy tablet or add a teaspoon of sodium bicarbonate into the flask. Watch your lava lamp erupt into activity! As the reaction slows down, simply add more.
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