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 adding a catalyst increase the rate of reaction?

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 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.


Question 2. Why are catalysts desirable to manufacturers?

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


Question 3. 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 4. Why does a spoonful of granulated sugar dissolve more quickly than a sugar lump of equal mass?

It has greater surface area.
The particles can move faster.
People stir their drinks more when they use granulated sugar.
It raises the temperature of the liquid.


Question 5. Why does increasing concentration increase the rate of reaction?

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.
There's more chance of particles colliding because there's a greater area for them to come into contact.


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