Rate of Reactions

Question 1

Test for Surface area

Answer 1

Calcium Carbonate chips
Large VS Small
The small chips have a higher surface area so the reaction is quicker

Question 2

Test for temperature

Answer 2

sodium thiosulphate + HCl
Time how long it takes for the X to dissapear
then warm in the HCl
repeat the test the higher the temperature the more successful collisions per second therefore the higher rate of reaction

Question 3

Test for concentration

Answer 3

HCl Plus marble chips changing the concentration of the acid the higher the concentration the higher the rate of the reaction

Question 4

Catalyst

Definition

Answer 4

A catalyst speeds up a reaction by providing an alternative pathway with a lower activation energy