physical change - A change in which no new substances are formed, e.g. changes of state., chemical change - A change that forms one or more new substances., word equations - A model used to show what substances come together in a reaction and what is made, atom - A small particle from which all substances are made., compound - A substance made of one or more type of atom that are bonded together., state symbols - Letters that show you what state of matter a substance named in an equation is in, mixtures - More than one type of particle mixed together, molecule - Two or more atoms joined together by a bond, molecular formula - Shows how many atoms of each element are in a molecule, elements - A pure substance that consists of only one type of atom,

Unit 6: Bonding & Stoichiometry

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