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 are catalysts desirable to manufacturers?

They allow reactions to happen at lower temperatures, reducing heating costs.
They increase the cost, making the products more valuable.
They allow reactions to happen more safely.
They slow the rate of a reaction, allowing it to be carefully controlled.


Question 2. Which conditions would give the slowest reaction?

A 5°C starch solution with a 5% amylase solution.
A 30°C starch solution with a 5% amylase solution.
A 30°C starch solution with a 20% amylase solution.
A 5°C starch solution with a 20% amylase solution.


Question 3. 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 4. Why does increasing surface area 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. Why can't we use the same catalyst (i.e. enzyme) to break down fats as we use to break down starches?

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


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