Year 8 Chemistry Key terms

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Element

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A pure substance made of one type of atom

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Compound

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A substance formed when two or more elements are chemically bonded

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Mixture

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Two or more substances physically combined, not chemically bonded

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Impure Substance

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Contains more than one type of particle (element/compound/mixture)

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Pure Substance

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A material made up of only one type of particle (either an element or a compound).

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Ductility

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Ability to be drawn into a wire

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Lustre

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How shiny a substance is

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Conductivity

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Ability to conduct heat or electricity

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Malleability

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Ability to be hammered into thin sheets

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Periodic Table Order

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Arranged by increasing atomic number