Matter 6.P.2.3 (Pt. 2)

Permanent changes are called Chemical Changes.​

Temporary changes are called Physical Changes.​

A physical changes involves a change in physical properties (shape, size, density, etc.)

It takes a physical change to change water ​to steam, or ice to liquid.

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Physical changes: only the phase changes, the substances does not. ​

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Physical changes usually change the size or shape of the substance. ​

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​Examples of Physical Change include: Melting Point & Shape

Physical Changes​ can be caused by changes in energy ​

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​Chemical Changes

Chemical Change: a change that creates a NEW material. (a change in chemical properties)

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The orginial materials are changed into something different.

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Typically irreversible

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Com​mon examples include: digestion, respiration, photosynthesis, burning, and decomposition.

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​Examples of Chemical Changes:

Burning and Rusting​

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