rates Flashcards
1
Q
what is a catalyst?
A
a catalyst is a substance that speeds up a chemical reaction but can be recovered chemically unchanged at the end of the reaction
2
Q
describe how increased tempreture effects the rate of reaction
A
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
3
Q
describe how increased concentration will increase the rate of a reaction
A
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
