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Ch. 9
Ch.9
10
Science
8th Grade
06/01/2009

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Cards

Term
chemical reaction
Definition
the process by which one or more substances change to produce one or more different substances
Term
precipitate
Definition
a solid that is produced as a result of a chemical reaction in solution
Term
exothermic reaction
Definition
a chemical reaction in which heat is released to the surroundings
Term
endothermic reaction
Definition
a chemical reaction that requires heat
Term
law of the conservation of energy
Definition
the law that states that energy cannot be created of destroyed but can be changed from one form to another
Term
chemical equation
Definition
a representation of a chemical reaction that uses symbols to show the relationship between the reactants and the products
Term
reactant
Definition
a substance or molecule that participates in a chemical reaaction
Term
product
Definition
a substance that forms in a chemical reaction
Term
law of conservation of mass
Definition
the law that states that mass cannot be created or destroyed in ordinary chemical and physical changes
Term
chemical formula
Definition
a combination of chemical symbols and numbers to represent a substance
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