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'''State of matter''' means whether a [[material]] is [[solid]], [[liquid]] or [[gas]].
===About States of Matter===
: [[Material|Materials]] can be solid, liquid or gas.: The '''state of matter''' can be changed by heating or cooling the material.: Heating can turn a solid into a liquid and turn a liquid to a gas.: Cooling can turn a gas into a liquid and liquid into solid.
====Solid====
Solids are a '''state of matter''' that:
*Plastic
*Glass
*Ice
====Liquid====
*Can be poured and will flow.
*Keep the same size. If you pour water into different shaped containers the water will not spread out or fit in a smaller space.
Examples of liquid [[Material|materials]]:
*Water
*Oil
====Gas====
*Can be poured and will flow.
*Can change size to fit the size of their container. They spread out and can be squashed into a smaller space.
Examples of gas [[Material|materials]]:
*Air (A mixture of gases, mostly nitrogen and oxygen)
*Steam