Chemical and Physical Change

Front

What is a Physical Change?

Back

A change in which no new substance is formed, and the original substance retains its properties.

Front

What is a Chemical Change?

Back

A change that results in the formation of new chemical substances with different properties.

Front

Example of a Physical Change?

Back

Dew forming on a leaf.

Front

Example of a Chemical Change?

Back

Burning wood, which produces ash and smoke.

Front

What is a sign that a Chemical Change has occurred?

Back

Unexpected color change, temperature change, formation of a precipitate.

Front

What is NOT a sign of a Chemical Change?

Back

A loss of transparency.

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How can you prove a Chemical Reaction has occurred?

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By comparing the properties of the new substance to the original substance.

Front

What happens during a Physical Change?

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The state of matter changes, but the substance remains the same.

Front

What is an example of a change in state of matter?

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Melting ice into water.

Front

What is Oxidation?

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A chemical reaction where a substance combines with oxygen, often producing heat and light.