AQA GCSE Rates of Reaction
Catalyst - correct answer ✔A substance that can speed up a reaction without
being changed or used up in the reaction
Collision theory - correct answer ✔The theory that in order for a reaction to
occur, particles must collide with sufficient energy
Concentration - correct answer ✔The amount of a substance in a certain
volume of solution, given in units of 'units of amount of substance'/'unit of
volume'
Joules - correct answer ✔The standard unit of energy
Rate of reaction - correct answer ✔How fast the reactants in a reaction are
changed into products
Reactant - correct answer ✔A substance that reacts in a chemical reaction
Reaction profile - correct answer ✔A graph that shows how the energy in a
reaction changes as the reaction progresses (also known as energy level
diagram)
Successful collision - correct answer ✔A collision between particles that
result in a chemical reaction
Surface area to volume ratio - correct answer ✔The amount of surface area
per unit volume of a particle
Catalyst - correct answer ✔A substance that can speed up a reaction without
being changed or used up in the reaction
Collision theory - correct answer ✔The theory that in order for a reaction to
occur, particles must collide with sufficient energy
Concentration - correct answer ✔The amount of a substance in a certain
volume of solution, given in units of 'units of amount of substance'/'unit of
volume'
Joules - correct answer ✔The standard unit of energy
Rate of reaction - correct answer ✔How fast the reactants in a reaction are
changed into products
Reactant - correct answer ✔A substance that reacts in a chemical reaction
Reaction profile - correct answer ✔A graph that shows how the energy in a
reaction changes as the reaction progresses (also known as energy level
diagram)
Successful collision - correct answer ✔A collision between particles that
result in a chemical reaction
Surface area to volume ratio - correct answer ✔The amount of surface area
per unit volume of a particle
