Unit 2: Matter and It's Interactions

Front

Expand

Back

To increase in size, volume, or quantity. It means to get bigger.

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Contract

Back

To decrease in size, volume, or quantity. It means to get smaller

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Physical Change

Back

A change in which no new substances are formed, and the material retains its original properties.

Front

Chemical Change

Back

A change that results in the formation of new substances.

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Conservation of Mass

Back

A principle stating that mass cannot be created or destroyed in a closed system through ordinary chemical reactions or physical changes.

Front

Insulator

Back

A material that does not easily allow heat, electricity, light, or sound to pass through it.

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Conductor

Back

A material that allows heat, electricity, light, or sound to pass through it easily.

Front

Physical Properties

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Characteristics of a substance that can be observed or measured with our senses. Examples: Color, Texture, Shape, Odor (Smell)

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Open System

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A system in science in which material can be lost because the experiment is happening in an open area (not closed)

Front

Closed System

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A system in science where no material is lost because it happens in a closed area