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The Name-inator: Metals and Non-Metals on the Periodic Table

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In general, elements on the left of the Periodic Table are metals. On the right are non-metals.

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Protons - Electrons - Neutrons

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Atomic Mass Definition - The average mass of atoms in a certain element (a.k.a. atomic weight) Definition of Atomic Mass An example of atomic mass is the number at the bottom of an element square, shown in the picture to the side.