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Science
Term | Definition |
---|---|
temperature | average energy of all the particles |
evaporation | change phase from liquid to gas |
condensation | change phase from gas to liquid |
freezing | change phases from liquid to solid |
melting | change phase from solid to liquid |
why is hot air hot? | the particles are moving fast |
why is cold air cold? | the particles are moving slow. |
How do molecules move in hot air? | speed up and spread out |
How do molecules move in cold air? | slow down and get closer together |