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18 Cards in this Set

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Chemical Reaction
Well-defined example of chemical change; 1/more substances change to new ones
Reactants
Substances about to react (left side of chemical equation)
Products
News substances produced (right side of equation)
Antoine Lavoisier
French chemist who performed experiments realting to the law of conservation of mass
Law of Conservation of Mass
In a chemical reaction, matter isn't created or destroyed, but conserved (starting mass=final mass)
Balanced Chemical Equation
An expression that describes chemical reactions using chemical formulas and symbols with equal #s of atoms of each element of both sides
Coefficients
#s representing relative amounts of substances taking part in a reaction
Synthesis Reactions
2/more simpler substances combine to form another more complex compound (2 reactants & 1 product)
Decomposition Reactions
1 substance breaks down/decomposes into 2/more simpler substances (1 reactant & 2/more products); Most endothermic
Single Displacement Reactions
1 element replaces another in a compound
Double Displacement Reactions
A positive ion of 1 compound replaces the positive ion of another (all compounds)
Precipitate
Insoluble compound formed during double displacement reactions
Exothermic Reactions
Form of energy is given off by the reaction
Endothermic Reaactions
Energy is needed for the reaction to occur
Catalyst
Substance that speeds up a chemical reaction w/o permanently changing itself
Inhibitors
Substances used to combine w/ 1 of the reactants to prevent certain reactions
Signs of a Chemical Reaction
Fizzing (formation of gas), Precipitate forms (solid forms when 2 solutions mixed), Color change, Release/absorbtion of energy (heat, light, electricity)
Factors of the Rates of Chemical Reactions
Temperature, concentration, surface area (higher ", higher rate), catalysts & inhibitors