In science class, you have been learning about three states of matter and how matter changes state. Water is an unusual substance because it is one of the few substances that expands when it freezes (changes from a liquid to a solid). Most other substances contract when they freeze. Try this activity to demonstrate the power of ice!
- freezer-safe plastic container with a lid
Fill the container almost to the brim with water. Place the container on a level surface inside a freezer. Add more water to the container until it is filled to the brim. Lay the lid on the container loosely. Wait a few hours. Check the container when the water has completely frozen.
What did you observe about the frozen water? What problems might be created when water seeps into roadway cracks and then freezes?