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2.1-2.2 vocab

homogeneous a mixture that is evenly mixed
atom basic unit of all matter
heterogeneous a mixture that is not evenly mixed
matter anything that has a mass and a volume
substance matter with a composition that is always the same
protons positively charged particles in an atom
electron negatively charged particle in an atom
necleus the center of an atom
isotope an atom with a different number of neutrons
ion an atom with a charge
Created by: colbuhan2686