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.

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