Elements, Compounds, & Mixtures

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What is a homogeneous mixture?

Back

A homogeneous mixture is a mixture in which the components are uniformly distributed and not chemically bonded, such as saltwater.

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What is a heterogeneous mixture?

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A heterogeneous mixture is a mixture in which the components are not uniformly distributed and can be easily separated, such as a salad.

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What defines an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means, such as oxygen (O) or gold (Au).

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What defines a compound?

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A compound is a substance formed when two or more elements are chemically bonded together, such as water (H2O) or ammonia (NH3).

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Is sugar (C12H22O11) an element, compound, or mixture?

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Sugar is a compound because it consists of two or more elements chemically bonded together.

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Is air a homogeneous or heterogeneous mixture?

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Air is a homogeneous mixture because its components (gases) are uniformly distributed.

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What is the difference between a compound and a mixture?

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

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Can a mixture be separated by physical means?

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Yes, mixtures can be separated by physical means, such as filtration or distillation.

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What is an example of a compound?

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An example of a compound is carbon dioxide (CO2), which consists of carbon and oxygen atoms chemically bonded.

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What is an example of a heterogeneous mixture?

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An example of a heterogeneous mixture is a bowl of cereal with milk, where the components can be seen and separated.