What is a catalyst?
A catalyst lowers the activation energy of a reaction and therefore increases the rate of reaction. The catalysts reacts with the reactants but is regenerated again in the reaction so it is not used up.
HG
Related Chemistry GCSE answers
All answers ▸What mass of calcium carbonate would you need to react with dilute hydrochloric acid to produce 10 g calcium chloride?
How does Le Chatelier's principle work when the pressure is changed?
Why does a higher temperature means the rate of reaction is faster?
Why does an atom have no overall charge?