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Rate of reaction (C3 first half) Flashcards | StudBud
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Rate of reaction (C3 first half)
Rate of reaction (C3 first half)
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OCR C3 first half quiz
Flashcards
10 cards
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Practice quiz
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Questions
10
Answers
1
If we increase the temperature, what happens to the rate of reaction?
Decreases
Increases
Stops
Stays the same
2
Why does a reaction eventually stop?
No more energy left
No more product left
One of the reactants runs out
Gas runs out
3
How many atoms in the formula Mg(NO
3
)
2
8
3
7
9
4
Why do powders react faster?
Bigger surface area
Particles move faster
They are cheaper
They just do
5
Why do you only need to use a small amount of catalyst?
Because Mr Bryson said
They don't get used up
They are toxic
They are expensive
6
Chemistry is...
...brilliant
...awesome
...the best
...my life
7
What does a catalyst do?
Chase mice
Slow down a reaction
Shopping list for cats
Speed up a reaction
8
Why does the reaction rate increase when the temperature is increased?
More energy is released
More particles to collide
Particles move faster and collide more often
More area for collisions to take place so more collisions
9
Why does an increase in concentration increase the rate of reaction?
Because they're thinking harder
Particles move faster so more collisions
Particles are more crowded so more collisions
Bigger surface area so more collisions
10
How many elements in the compoun Mg(NO
3
)
2
4
2
3
5
