Mixtures, Solutions, and Changing Matter

Front

What is a Physical Change?

Back

A change that does not alter the chemical composition of a substance. Examples include melting, freezing, and dissolving.

Front

What is a Chemical Change?

Back

A change that results in the formation of new chemical substances. Examples include rusting, burning, and cooking.

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What is a Mixture?

Back

A combination of two or more substances that are not chemically bonded. Examples include salad, trail mix, and air.

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What is a Solution?

Back

A homogeneous mixture where one substance (solute) is dissolved in another (solvent). Example: saltwater.

Front

What is a Solute?

Back

The substance that is dissolved in a solution. Example: salt in saltwater.

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What is a Solvent?

Back

The substance that dissolves the solute in a solution. Example: water in saltwater.

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What is the Law of Conservation of Mass?

Back

In a chemical reaction, matter is neither created nor destroyed; it is conserved.

Front

What happens during a Chemical Reaction?

Back

Atoms rearrange to form new substances, which may have different properties from the original substances.

Front

What is an example of a Physical Change?

Back

Melting ice into water.

Front

What is an example of a Chemical Change?

Back

Burning wood to produce ash and smoke.