AQA GCSE Chemistry – C8 Rates & Equilibrium
Questions with Correct Answers 2026–2027 | Complete
Revision Guide & Exam Practice Pack
To workBout the rate of a chemical reaction, you can find out how quickly:
(2) -BCORRECT ANSWER --Bthe reactants are used up as they make products, OR
- the products of the reaction are made.
In some reactions, how could you find out how quickly the reactants are used up in some reactions? -
CORRECT ANSWER -Bt measuring the mass of a reaction mixture.
From a graph, where can you find the rate of reaction at any given time? - CORRECT ANSWER -
The gradient of the line on a graph of amount of reactant/product VS. time.
The steeper the gradient, the... - CORRECT ANSWER -faster the reaction is at that time.
What is the equation for mean rate of reaction? - CORRECT ANSWER -
quantity of reactant used (or product formed) / time taken
For a curved line, how would you find the rate of reaction on a graph? - CORRECT ANSWER -
By drawing a tangent at one point.
The collision theory states that reactions can only happen if... - CORRECT ANSWER -
particles collide with enough energy to change into new substances.
What 2 ways can you increase the rate of reaction? - CORRECT ANSWER --
Increasing the frequency of reactingBparticles colliding with each other
- Increasing the energy they have when they collide.
Name 4 factors that increase the frequency of collision, or the energy of the particles. -
CORRECT ANSWER -- Increasing the temperature
1
Questions with Correct Answers 2026–2027 | Complete
Revision Guide & Exam Practice Pack
To workBout the rate of a chemical reaction, you can find out how quickly:
(2) -BCORRECT ANSWER --Bthe reactants are used up as they make products, OR
- the products of the reaction are made.
In some reactions, how could you find out how quickly the reactants are used up in some reactions? -
CORRECT ANSWER -Bt measuring the mass of a reaction mixture.
From a graph, where can you find the rate of reaction at any given time? - CORRECT ANSWER -
The gradient of the line on a graph of amount of reactant/product VS. time.
The steeper the gradient, the... - CORRECT ANSWER -faster the reaction is at that time.
What is the equation for mean rate of reaction? - CORRECT ANSWER -
quantity of reactant used (or product formed) / time taken
For a curved line, how would you find the rate of reaction on a graph? - CORRECT ANSWER -
By drawing a tangent at one point.
The collision theory states that reactions can only happen if... - CORRECT ANSWER -
particles collide with enough energy to change into new substances.
What 2 ways can you increase the rate of reaction? - CORRECT ANSWER --
Increasing the frequency of reactingBparticles colliding with each other
- Increasing the energy they have when they collide.
Name 4 factors that increase the frequency of collision, or the energy of the particles. -
CORRECT ANSWER -- Increasing the temperature
1
