In chemistry, the rate of change refers to how quickly or slowly a reaction occurs. It's the speed at which reactants are converted into products.
Rate of Change cheat sheet for homework
This is the speed at which reactants are transformed into products during a chemical reaction.
A substance that increases the rate of a chemical reaction by reducing the energy needed for the reaction to occur, but isn't consumed in the process.
An equation that relates the rate of a reaction to the concentrations of its reactants and determines how they affect the rate of the reaction.