Elements, Compounds and Mixtures

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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. Examples include Copper (Cu) and Carbon (C).

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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. An example is Chalk (CaCO3).

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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. Mixtures can be homogeneous or heterogeneous.

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What is a Homogeneous Mixture?

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A homogeneous mixture is a mixture in which the composition is uniform throughout. An example is saltwater.

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What is a Heterogeneous Mixture?

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A heterogeneous mixture is a mixture in which the composition is not uniform throughout. An example is oil and water.

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What is the difference between an Element and a Compound?

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An element is a single type of atom, while a compound consists of two or more different types of atoms chemically bonded together.

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What is an example of a Heterogeneous Mixture?

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An example of a heterogeneous mixture is rocks and sand.

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What is an example of a Homogeneous Mixture?

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An example of a homogeneous mixture is air or vinegar.

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What is the chemical formula for Chalk?

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The chemical formula for Chalk is CaCO3.

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What is the symbol for Copper?

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The symbol for Copper is Cu.