Energy, Heat & MotionPhase Transitions
Water That Freezes on Command
A quiet liquid can stay below freezing until something disturbs it
A pouch of liquid sits on your desk. You click a tiny disc, and it turns solid and warm. How can freezing make heat?
You'll find out
- Why water can stay liquid below freezing
- What a tiny click really starts
- How cold liquid water can get
Why it matters
Freezing rain, icy plane wings and reusable hand warmers all come down to liquids that wait to freeze.
Play this lesson
Free to play in your browser or on iPhone