Element - A simple substance that consists of only one type of atom., Compound - Contains two or more different elements chemically combined., Pure - Contains either two or more of the same element or compound., Mixture - Contains either two or more different types of elements or compounds., Chemical Reaction - When atoms arrange themselves in a different way to give a new substance(s)., The Law of Conservation of Mass - Matter can neither be created nor destroyed; mass before and after a physical or chemical reaction is always equal.,

Elements, Compounds & Mixtures Definitions

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