On Wednesday, February 21, we had a great time learning and experimenting with chemical and physical changes.
First, we checked out how different substances react when mixed together. Water gel and oobleck were favorites!
We also wrote secret messages in lemon juice. When heated over the toaster, the lemon juice reacted with the air and turned brown, which revealed our messages.
Then it was on to making slime! The detergent and glue made a very sticky, slimy concoction.
We also painted with frozen tempera paint. The young scientists found that putting salt on the frozen paint helped it to melt faster and made painting easier!
To make a cloud in a bottle, we used a bicycle pump, a cork and a needle, a little bit of rubbing alcohol, and a 2-liter bottle.
We hope to see you at our next Exploratorium! They are each Wednesday from 2 to 3:30!