the rate of a reaction is the speed at which a chemical reaction procceds. the rate of reaction = ( amount of reactant used or product formed/time)
the factures that affect the rate of reaction include temperature, surface area, concentration, and the use of a catalyst
temperature
the rate of reaction increases if the temperature of the reaction increases. this is because the particales have more kenetic engery so the are able to move faster
cocentration
the rate of reaction increases if the concentration of the reactants in a liquid or the pressure of a gas increases. this is because there are more particales in a given area/volume so they are more likey to collide with eachother.