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Ch. 7.1
science note cards
9
Science
8th Grade
02/02/2011

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Term
chemical reaction
Definition
produces new materials by breaking and reforming bonds in between atoms
Term
electrolysis
Definition
current is passed through water to break bonds and separate into hydrogen and oxygen
Term
Reactants
Definition
substances there before chemical reaction
Term
Products
Definition
Materials formed by chemical reaction
Term
Synthesis
Definition
Elements or simple reactants form a compound
Term
Decomposition
Definition
Compound breaks down into elements or simpler products
Term
Combustion
Definition
Products always have water and carbon dioxide
Term
Signs of a chemical reaction
Definition
Color change, forming of solid (precipitate), gas formation, temperature change, and an odor
Term
Ways to change the rate of a chemical reaction
Definition
Concentration, Suface area, Temperature, and a Catalyst
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