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Chemical Formulas

8.5D

TermDefinition
Chemical change the formation of a new substance with different properties; cannot be undone by physical means
Chemical equation a representation of a chemical reaction by symbols and numbers
Chemical formula a representation of a substance in which the elements are represented by their symbols and subscripts represent the number of atoms of each element
Chemical reaction a change caused by the interaction of two or more substances (reactants) resulting in the formation of new substances (products)
Law of conservation of mass matter is not created or destroyed; only rearranged
Precipitate the formation of solids from a solution
Product substance(s) resulting from a chemical reaction
Reactant substances that are combined and changed during a chemical reaction
Subscript the number written to the right and slightly below an element in a chemical formula; represents the number of atoms of an element present in a chemical formula
 



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