Chemical Equations

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Small # after an element to tell you how many atoms of that element are in the compound or molecule

Large # in front of a compound or molecule which tells how many molecules are in the reaction

When a substance is changed into a new substance with different properties

A substance made of only one kind of atom

Reactants yield products

Two or more different elements joined together

One particle of a substance made of 2 or more atoms

A material's property that becomes evident during a chemical reaction