Factors that Affect the Rate of Reaction (OCR GCSE Chemistry A (Gateway Science Suite)): Quizzes
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Practise the questions
11 questions from this quiz
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Practise the questions
11 questions from this quiz
Which three are the main conditions that affect the rate of reaction?
Which three are the main conditions that affect the rate of reaction?
Temperature, pressure, concentration
What happens to particles when temperature is increased?
What happens to particles when temperature is increased?
They move faster with more energy
How does decreasing temperature affect the rate of reaction?
How does decreasing temperature affect the rate of reaction?
Slows it down
Why does increasing pressure speed up reactions involving gases?
Why does increasing pressure speed up reactions involving gases?
Particles are squeezed closer together
What effect does increasing concentration have on collision likelihood?
What effect does increasing concentration have on collision likelihood?
Increases it
In reactions with solids, which particles can collide with other reactants?
In reactions with solids, which particles can collide with other reactants?
Only particles on the surface
What happens to reaction rate when a solid is crushed into powder?
What happens to reaction rate when a solid is crushed into powder?
Rate increases
What does a higher surface area-to-volume ratio mean for reaction rate?
What does a higher surface area-to-volume ratio mean for reaction rate?
More particles available, faster reaction
How do catalysts speed up reactions?
How do catalysts speed up reactions?
Lower activation energy pathway
What happens to a catalyst during a chemical reaction?
What happens to a catalyst during a chemical reaction?
It is not consumed
What two factors of particle collisions determine the rate of reaction?
What two factors of particle collisions determine the rate of reaction?
Frequency and energy