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the ratio of the mass of an object to its volume (measured in units of grams per liters (g/L))
a trait of a substance that can be used for identification, without changing a composition of a substance
a blend of two or more substances without the use of a chemical reactions (physically blended)
a process used to separate substances of different boiling points, either solids or liquids; the substance is then condensed back into a liquid
most simple form of matter that has a unique set of properties and CANNOT be broken down into a simpler substance by a chemical reaction
a substance that contains two or more elements chemically combined and CAN be broken into simpler substances by a chemical reaction
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