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

Question 2. Which conditions would give the slowest reaction? A 30°C starch solution with a 20% amylase solution. A 5°C starch solution with a 5% amylase solution. A 30°C starch solution with a 5% amylase solution. A 5°C starch solution with a 20% amylase solution.

Question 3. 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.

Question 4. Why does a spoonful of granulated sugar dissolve more quickly than a sugar lump of equal mass? It raises the temperature of the liquid. The particles can move faster. People stir their drinks more when they use granulated sugar. It has greater surface area.

Question 5. Why does increasing surface area 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.

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:

Get the app!