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Chapter 14 Vocab.

Science- Chemical Reactions

Chemical Reaction a process in which one or more substances change to make one or more new substances
Precipitate a solid substance that is formed in a solution
Chemical Formula a shorthand way to use chemical symbols and numbers to represent a substance
Chemical Equation uses chemical symbols and formulas as a shortcut to describe a chemical reaction
Reactants the starting materials in a chemical reaction
Products the substances formed from a reaction
Law of Conservation of Mass This law states that mass is neither created nor destroyed in ordinary chemical and physical changes. This law means that a chemical equation must show the same numbers and kinds of atoms on both sides of the arrow.
Synthesis Reaction a reaction in which two or more substances combine to form one new compound
Decomposition Reaction a reaction in which a single compound breaks down to form two or more simpler substances
Single- Displacement Reaction an element replaces another element that is a part of a compound; the products are a new compound and a different element
Double-Displacement Reaction a reaction in which ions from two compounds exchange places
Exothermic Reaction a chemical reaction in which energy is released
Endothermic Reaction a chemical reaction in which energy is taken in
Law of Conservation of Energy states that energy cannot be created or destroyed. However, energy can change forms. And energy can be transferred from one object to another .
Created by: kwalterhouse