Element - A substance made of only one type of atom, Compound - A substance made of two or more different elements that are chemically combined, MIxture - A substance that is made of two or more other substances that are NOT chemically combined, subscript - the small number in a formula that tells you how many atoms of a certain element are present, Period - The horizontal rows on the periodic table, metalloids - the elements in the zig zag part of the periodic table, mixture of compounds image, Group - The vertical columns on the periodic table,

Periodic Table

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