Chem_Y8_S1

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Elements

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A pure substance made of only one type of atom.

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Compounds

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A substance made when two or more different elements are chemically joined.

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Mixtures

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A combination of two or more substances that are not chemically joined.

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Metals

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Elements that are shiny, good conductors of heat and electricity, and can be bent or shaped.

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Nonmetals

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Elements that are dull, poor conductors, and often brittle.

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Alloys

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A mixture of a metal with other elements to make it stronger or better in some way.

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Monatomic Elements

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Elements made of single atoms, like helium or neon.

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Molecules

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Groups of two or more atoms bonded together, like oxygen (O₂) or water (H₂O).

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Crystal Lattice

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A structure where atoms or ions are arranged in a repeating 3D pattern, like in salt or diamonds.

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Is this an element, compound or mixture? Oxygen gas (O₂)

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Element