Properties of Matter, Pure Substances and Mixtures

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What are pure substances?

Back

Pure substances are materials that are made of only one type of particle and have a uniform composition throughout.

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What are mixtures?

Back

Mixtures are combinations of two or more substances that are not chemically combined and can be separated by physical means.

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances.

Front

Can mixtures retain the original properties of their components?

Back

Yes, mixtures retain the original properties of the substances that make them up.

Front

What is an example of a physical change?

Back

Ice melting into water is an example of a physical change.

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What is an example of a chemical change?

Back

Burning wood is an example of a chemical change.

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What is a compound?

Back

A compound is a substance formed when two or more elements are chemically bonded together.

Front

How can you separate the components of a mixture?

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Components of a mixture can be separated by physical methods such as filtration, evaporation, or distillation.

Front

What is the difference between a mixture and a compound?

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A mixture consists of two or more substances that are not chemically combined, while a compound consists of two or more elements that are chemically bonded.