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WorksheetsRates of Reaction
Total questions: 14
Worksheet time: 9mins
What does rate of reaction tell us?
How fast products turn into reactants
How fast reactants turn into products
If a reaction happens or not
What happens during a reaction
What factors affect rate of reaction?
Surface area
Catalysts
Temperature
Concentration
Time
What is activation energy?
Energy needed to make chemicals spontaneously split apart
Energy to activate chemicals
Largest amount of energy particles have
Smallest amount of energy particles need before they react
What is needed for particles to react?
They must collide
They must have enough energy
They must be elements
They must be compounds
If we increase the temperature, what happens to the rate of reaction?
Nothing
Decreases
Increases
Particles that are at a higher temperature move (a) then particles with a low temperature
Why does increasing concentration increase rate of reaction?
Less particles moving around so more collisions
More particles moving around so more collisions
More particles moving around so less collisions
Less particles moving around so less collisions
A higher surface area means....
nothing
higher rate of reaction
lower rate of reaction
Which has the biggest surface area?
Small particles
Large particles
elements
compounds
What is the name of a special substance which can be added to a reaction to increase the rate of reaction?
(a)
What happens to a catalyst during a reaction
It is used up and needs to be replaced every reaction
It is used up
It isnt used up but cant be used again
It isn't used up and can be used again
True or false: There is only one type of catalyst which can be used for every reaction
True
False
How can we measure the rate of reaction?
Time the bubbles
Measure how quickly reactants are used up
Measure rate at which products are made
Just look and see what is happening
Why is it important to control the rate of reaction in the body?
Otherwise you will die
So your cells can get exactly what they need
