Substances change state when they are heated up or cooled down. These are the different state changes:
| Heating up |
melting |
solid |
 |
liquid |
| evaporating |
liquid |
|
gas |
| Cooling down |
condensing |
gas |
|
liquid |
| freezing |
liquid |
|
solid |
Make sure you can recognise the different state changes
Sometimes it can be easy to muddle up melting, evaporating, condensing and freezing, so make sure you know what they mean.
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