Elements, Compounds, Mixtures

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What is a mixture?

Back

A mixture is a combination of two or more substances that are not chemically combined and can be separated by physical means.

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What is an example of a mixture?

Back

Air is an example of a mixture, as it contains various gases that are not chemically bonded.

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What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means.

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What is an example of an element?

Back

Oxygen is an example of an element.

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What is a compound?

Back

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

Front

What is an example of a compound?

Back

Water (H2O) is an example of a compound, made from hydrogen and oxygen.

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How can mixtures be separated?

Back

Mixtures can be separated by physical methods such as filtration, distillation, or evaporation.

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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.

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What is a homogeneous mixture?

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A homogeneous mixture is a mixture that has a uniform composition throughout, such as saltwater.

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What is a heterogeneous mixture?

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A heterogeneous mixture is a mixture where the components are not uniformly distributed, such as a salad.