Term Definition
atom a small particle that is a building block of matter
compound a substance made of two or more elements that are joined in a specific combination
element a substance made of only one kind of atom
heterogeneous a mixture in witch the substances are not evenly mixed
homogeneous a mixture in witch two or more substances are evenly mixed but not bonded together
matter anything that has mass and takes up space
mixture matter that can vary in composition
molecule two ore more atoms that are held together by chemical bonds and act as a unit
substance matter with a composition that is always the same

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