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. Which conditions would give the fastest reaction?

A 1 gram iron nail in 1.0 molar acid.
1 gram of iron filings in 1.0 molar acid.
A 1 gram iron nail in 0.5 molar acid.
1 gram of iron filings in 0.5 molar acid.


Question 2. Which conditions would give the slowest reaction?

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


Question 3. 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 allow reactions to happen at lower temperatures, reducing heating costs.
They increase the cost, making the products more valuable.


Question 4. 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 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.


Question 5. 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.


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