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

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


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


Question 3. Why does increasing temperature 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 a greater area for them to come into contact.
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 increasing surface area increase the rate of reaction?

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 more of them in a given volume.
There's more chance of particles colliding because there's a place for them to meet.


Question 5. Why does a spoonful of granulated sugar dissolve more quickly than a sugar lump of equal mass?

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


If you would like to track your scores, please enter your preferred first name into the box (please note, this uses cookies to store the data on your computer/phone/tablet - please see the FAQ for more information). Alternatively, if your teacher has given you a code starting with a # symbol, you can enter that:


Snapquiz© CJ Thornton    Terms and Conditions    Privacy
Teachers


Log out