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EMEQ Vocabulary

Law of Conservation of Mass the mass of substances produced (products) by a chemical reaction is always equal to the mass of the reacting substances (reactants)
Physical change change in subsitance that only effects physical properties,such as size or shape
Chemical Change produces a new substance with different properties than original substince
Element substance that can not be broken down into simpler substances
Chemical formula a representation of a substance using symbols for its constituent elements
Element (Diatomic) Molecule a molecule consisting of only 2 of the same atoms which are covalently bonded together
Compound molecule two or more elements that are bonded together
Chemical equation a written representation of the process that occurs in a chemical reaction (products on right and reactants on left)
Chemical reaction a process in which one or more substances are converted to one or more different substances
Reactants The chemical formulas on the that represent the starting substances
Products The substances produced by the reaction on the left
Coefficient number in front of the equation that tells how many molecules that are (if no coefficient shown, its one)
Subscript shows how many atoms of each element there are
Created by: d0408203