The characteristic properties of matter can be used to identify and separate one substance from another.

*All objects and substances in the world are made of matter.
*Materials may be composed of parts that are too small to be seen without magnification.
*Matter has two fundamental properties that can be measured: matter has mass (related to weight) and matter takes up space (related to length, area and volume).
*Matter can exist in different states: The three most common are solids, liquids, and gases.
*Air is a substance that surrounds us, has mass and takes up space.
*Heating and cooling (temperature change) may cause changes in the properties of materials including phase changes in the state of matter.
*The amount of matter and weight are conserved across a range of transformations including melting, freezing and dissolving.
*Water has unique properties which makes it an important resource.

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