Mixtures, Elements, Compounds

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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 together. Each substance retains its own properties.

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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. It consists of only one type of atom.

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What is a compound?

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A compound is a substance formed when two or more elements are chemically bonded together in a fixed ratio, resulting in new properties.

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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 is a substance formed from the chemical combination of two or more elements.

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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, such as saltwater.

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What is a heterogeneous mixture?

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A heterogeneous mixture is a mixture that consists of visibly different substances or phases, such as a salad.

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Can elements be broken down into simpler substances?

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No, elements cannot be broken down into simpler substances by chemical means.

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What are some examples of elements?

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Examples of elements include hydrogen (H), oxygen (O), carbon (C), and gold (Au).

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What are some examples of compounds?

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Examples of compounds include water (H2O), carbon dioxide (CO2), and sodium chloride (NaCl).

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What is a mixture of elements?

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A mixture of elements is a combination of two or more different elements that are not chemically bonded, such as a mixture of iron and sulfur.