SATsguide.co.uk Blog http://www.satsguide.co.uk/blog/index.php Copyright 2012, SATsguide team info@satsguide.co.uk (SATsguide team) en-US SPHPBLOG 0.4.5 States of matter http://www.satsguide.co.uk/blog/index.php?entry=entry101002-125831
Solid, liquid and gas are called the three states of matter.

Materials can be changed from one state to another by heating or cooling.
Heating

* If ice (solid) is heated, it changes to water (liquid). This change is called melting.
* If water (liquid) is heated, it changes to water vapour (gas). This change is called evaporation.

Cooling

* If water vapour (gas) is cooled, it changes to water (liquid). This change is called condensing.
* If water (liquid) is cooled, it changes to ice (solid). This change is called freezing.
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