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Reactants

the substances that undergo change

products

new substances formed as a result

single replacement reaction

a reaction when one element takes tha place for another element

double replacement reaction

one in which two different compounds exchange positive ions and form two new compounds

combustion reaction

is one in which a substance reacts rapidly with oxygen, usually makes hea and light

oxidation-reduction reaction

a reaction in which electrons are transferred from one reactant to another

Chemical energy

the energy stored in chemical bonds of a substance

exothermic reaction

a chemical reaction that releases energy to its surroundings

endothermic reation

a chemical reaction that absorbs energy from its surroundings

reaction rate

the rate at which reactants change into products over time

catalyst

substance that effects the reaction rate without being used up in the reaction

Equillibrium

is a state in which the forward and reversepaths of a change take place at the same time

reversible reaction

is a reaction in which the conversion of reactants into products and the conversion of products into reactions can happen simultaneously

synthesis reaction

is a reaction in which two or more substances react to form a single substance

decompositon reaction

is a reaction when a compound breaks down into two or more simpler substances

molar mass

the mass of one mole

mole

an amount of a substance that contains approximatley 6.02X10 to the 23rd power

chemical equation

is a representation of a chemical reaction where the reactants and products are expressed as formulas

coefficients

the numbers that appear before a formula

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