This modified version of a lava lamp is definitely one of our favorite cool science experiments! It's a super fun way for kids to explore the density of liquids using materials you have right in your kitchen.
By sending a voltage through a pickle, the electrons from sodium atoms present in the pickle are excited to a higher energy state and then relaxed, emitting some of their energy as visible yellow light!
Apple theme: Apple Science Experiment for Preschool and Kindergarten. A Super Simple and Easy Science Experiment for your kids to explore. Make predictions and record observations as the apples oxidize.