Periodic table (vocab)

Front

Table of chemical elements by atomic number

Back

Periodic Table

Front

A pure substance that cannot be separated into simpler substances.

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Element

Front

Notation for an atom of an element (1-2 letters)

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Chemical symbol

Front

Number of protons in an atom's nucleus

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Atomic Number

Front

Mass of an atom ≈ protons + neutrons

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Atomic Mass

Front

Columns on the Periodic Table that arrange elements by valence electrons.

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Groups

Front

Rows in the Periodic Table classifying elements by electron shells.

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Families

Front

Unreactive non-metals in Group 18 of the periodic table

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Noble Gases

Front

Area where electrons of the same energy level are found

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Electron Shell

Front

Electrons in the outermost energy level that influence an element's reactivity.

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Valence Electrons