Pure Substances and Mixtures

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What is a heterogeneous mixture?

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A heterogeneous mixture is one that does not have a uniform composition, meaning the different components can be seen and separated easily.

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What is a homogeneous mixture?

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A homogeneous mixture is one that has a uniform composition throughout, where the different components are not easily distinguishable.

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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, such as elements and compounds.

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What is a compound?

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A compound is a substance made up of two or more different kinds of atoms that are chemically combined.

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What is a mixture?

Back

A mixture is a combination of two or more substances where each substance retains its own properties.

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Can the components of a mixture be separated?

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Yes, the components of a mixture can be separated by physical means.

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What is an example of a heterogeneous mixture?

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An example of a heterogeneous mixture is a salad, where the individual ingredients can be seen and separated.

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What is an example of a homogeneous mixture?

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An example of a homogeneous mixture is saltwater, where the salt is completely dissolved in the water.

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What is the difference between a mixture and a compound?

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A mixture is a physical combination of substances that can be separated, while a compound is a chemical combination of substances that cannot be separated by physical means.

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What is an element?

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