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Changing From One to Another

Heat it and it loosens up. Cool it and it tightens up. Nothing is ever lost.

Name
A dried puddle has not stopped existing. The water went into the air, and you can get it back.
What happensStarts asEnds asCalled
ice left on a warm windowsill
water put in the freezer
a puddle on a sunny day
chocolate held in a warm hand
steam hitting a cold window
Word bank: solid  ·  liquid  ·  gas   |   melting  ·  freezing  ·  evaporating  ·  condensing
Prove the water is still there
  1. Put a little water in a cup and mark the level with a pen.
  2. Put a clear plastic bag over the top and hold it on with a rubber band.
  3. Leave it somewhere warm and sunny for a few hours.
  4. Look at the INSIDE of the bag.
What did you find on the inside of the bag?
Where had that come from?
So when a puddle dries up outside, where does the water actually go?