Elements, Compounds, and Mixtures

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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 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.

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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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How can you separate iron filings from sand?

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You can use a magnet to separate iron filings from sand, as iron is magnetic while sand is not.

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What is a molecule?

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A molecule is the smallest unit of a chemical compound that retains its chemical properties, consisting of two or more atoms bonded together.

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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. Examples include elements and compounds.

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What is the difference between a compound and a mixture?

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A compound is made of two or more elements chemically bonded together, while a mixture is a physical combination of substances that can be separated by physical means.

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What is the chemical formula for table salt?

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