things that increase the rate of reaction (number of collisions)

Question 1

a way of speeding up the rate of reactions is by increasing the _________ of dissolved reactants

Answer 1

concentration
“a way of speeding up the rate of reactions is by increasing the CONCENTRATION of dissolved reactants”
with the fact that there’s more reactants presents with this in mind more collisions will take place in turn speeding up the rate of reaction

Question 2

a way of speeding up the rate of reactions is by increasing the ________ of gas reactants

Answer 2

pressure
“a way of speeding up the rate of reactions is by increasing the PRESSURE of gas reactants”

increasing the pressure is like increasing the concentration
it increases the frequency (number) of collisions in turn increasing the rate of reaction

Question 3

on way of increasing the rate of reaction is upping the initial ________ of the area

Answer 3

temperature
“on way of increasing the rate of reaction is upping the initial TEMPERATURE of the area”

the temperature will give the reactant particles more energy than the activation energy
together this makes more collisions happens meaning faster reaction times

Question 4

another way of upping the rate of reaction is increasing the ______ area of solid reactants

Answer 4

surface
“another way of upping the rate of reaction is increasing the SURFACE area of solid reactants”

surface increase makes more particles collisions,
this is often done by breaking up solids into smaller lumps (e.g powders), with the greater surface area to volume ratio exposes more particles to colliding.

Question 5

a simple method of increasing the rate of the reaction is the use of c_____

Answer 5

catalysts
“a simple method of increasing the rate of the reaction is the use of CATALYSTS”

catalysts are substance which increase the rate of chemical reaction without being used up in the process