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anything that has mass and takes up volume


an atom with a particular, distinctive number of protons; the elements are organized in the periodic table


a homogeneous mixture


a solution with particles that are large enough to scatter light

pure substance

a substance in which every particle is the same

atomic symbol

one or two letter abbreviations which represent elements on the periodic table

homogeneous mixture

a mixture of more than one substance that appears to be all one substance; also called a solution


a mixture in which the solute particles are large enough to settle out over time


a blend of two or more pure substances


when two or more elements combine in a chemical reaction, this is the result

heterogeneous mixture

a mixture of more than one substance in which there are visible, different parts

Tyndal Effect

when particles in a solution are two small to scatter light

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