rates

Question 1

what is a catalyst?

Answer 1

a catalyst is a substance that speeds up a chemical reaction but can be recovered chemically unchanged at the end of the reaction

Question 2

describe how increased tempreture effects the rate of reaction

Answer 2

when a substance is heated particles move around faster as they have more kinetic energy. this results in more colisions occuring in a given time and the reaction is fast

Question 3

describe how increased concentration will increase the rate of a reaction

Answer 3

there are a greater number of moles of solute in the same volume of solvent. this results in more colisions in a given time and the reaction is fast