CA&S 2016-17 Grade 3 Physical States Of Matter

Our children have been studying states of matter in school, and today they experienced an amazing presentation that allowed them to see sublimation, evaporation and condensation in action!
When Jody Harris, a scientist from the Discovery Museum in Acton, arrived with a cooler of dry ice and a tank of liquid nitrogen the fun had just begun! She did experiments using these things and a number of simple household items to help the children expand their understanding of the physical states of matter.
Be sure to ask:

1. How did Ms. Harris make bubbles with dry ice? What did they feel and smell like?

2. What happened when to the banana that was placed in liquid nitrogen?

3. Will liquid nitrogen make a mess if it spills on the table? Why?