Snapquiz - Collision Theory

This is the Snapquiz on Collision Theory. Click here or use the embedded video if you haven't watched the lesson yet.


Question 1. Why does increasing concentration increase the rate of reaction?

There's more chance of particles colliding because there's more of them in a given volume.
There's more chance of particles colliding because they're moving faster.
There's more chance of particles colliding because there's a greater area for them to come into contact.
There's more chance of particles colliding because there's a place for them to meet.


Question 2. Why can't we use the same catalyst (i.e. enzyme) to break down fats as we use to break down starches?

Catalysts only work for very specific reactions.
Catalysts are not soluble in fats.
Catalysts are too rare to use for several different reactions.
Catalysts are too expensive to use for more than one reaction.


Question 3. Why does increasing temperature increase the rate of reaction?

There's more chance of particles colliding because there's a greater area for them to come into contact.
There's more chance of particles colliding because there's a place for them to meet.
There's more chance of particles colliding because they're moving faster.
There's more chance of particles colliding because there's more of them in a given volume.


Question 4. Why does adding a catalyst increase the rate of reaction?

There's more chance of particles colliding because there's more of them in a given volume.
There's more chance of particles colliding because they're moving faster.
There's more chance of particles colliding because there's a place for them to meet.
There's more chance of particles colliding because there's a greater area for them to come into contact.


Question 5. Some catalysts are very expensive. Why is it still economical to use them in some cases?

They're the only way to manufacture a product.
If they weren't used for the reaction they would just go to waste.
The manufacturers can buy them cheaper in bulk.
They aren't used up in a reaction.


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