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What is a compound?

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A compound is a pure substance formed when two or more elements chemically combine in fixed proportions.

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What is a mixture?

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A mixture is a combination of two or more substances that are not chemically bonded and can 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.

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Is water (H2O) an element, compound, or mixture?

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Water (H2O) is a compound.

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What is the difference between a pure substance and a mixture?

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A pure substance has a uniform and definite composition, while a mixture contains two or more substances that retain their individual properties.

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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 that does not have a uniform composition, such as a salad.

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Can compounds be separated into their elements?

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Yes, compounds can be separated into their elements through chemical reactions.

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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.

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What is an example of a mixture?

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An example of a mixture is air, which contains various gases like nitrogen, oxygen, and carbon dioxide.