Y8CHEM - Glossary W1

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atom

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The smallest particle of an element

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atomic number

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The number by which elements are ordered in the periodic table

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chemical symbol

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One or two letters used to represent an element

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element

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A chemical substance made up of only one type of atom

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group

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A column in the periodic table

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metal

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A shiny element that conducts heat and electricity

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non-metal

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An element that typically does not conduct heat or electricity

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period

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A row in the periodic table

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periodic table

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A grid arrangement of all known chemical elements

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matter

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Any substance that takes up space and has mass