Heterogeneous or Homogeneous Mixtures - Concept Review

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What is a pure substance?

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A pure substance is a material that has a constant composition and consistent properties throughout. It can be an element or a compound.

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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. It consists of only one type of atom.

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What is a compound?

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

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What is a homogeneous mixture?

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A homogeneous mixture is a mixture that has a uniform composition and appearance throughout. The individual components are not distinguishable.

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What is a heterogeneous mixture?

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A heterogeneous mixture is a mixture in which the individual components are not uniformly distributed and can be easily distinguished.

Front

Give an example of a pure substance that is a compound.

Back

Water (H2O) is an example of a pure substance that is a compound.

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Give an example of a pure substance that is an element.

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Gold (Au) is an example of a pure substance that is an element.

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What is salt water classified as?

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Salt water is classified as a homogeneous mixture.

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What is raisin bran cereal classified as?

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Raisin bran cereal is classified as a heterogeneous mixture.

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Is NaCl a pure substance or a mixture?

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NaCl (table salt) is a pure substance, specifically a compound.