Chemistry-rates of reaction

Question 1

how can we speed up the rate of reactions

Answer 1

larger surface area
higher temperature
more concentrated
catalysts

Question 2

name the equation to measure the rate of reaction

Answer 2

rate of reaction =

time taken

Question 3

name the things you should measure if you want to find out the rate of reaction

Answer 3

the mass of a substance - measures with a balance

the volume of gas - measured with a gas syringe

Question 4

what does a catalyst do

Answer 4

speeds up the rate of reaction without being used up itself

Question 5

how does a lager surface area speed up the rate or reaction

Answer 5

more particles are exposed so there is a higher chance of successful collisions

Question 6

how does increased concentration speed up the rate of reaction

Answer 6

there are more particles so there is a higher chance of successful collisions

Question 7

how does a higher temperature increase the rate of reaction

Answer 7

there is more energy so the particles move quicker so there is a higher chance of more successful collisions

Question 8

what is the activation energy

Answer 8

the minimum amount of energy the particles must have to make a successful collision

Question 9

how can we measure the rate of reaction

Answer 9

the rate a which a reactant is used up

the rate a which a product is formed