Snapquiz - The Limestone Cycle

This is the Snapquiz on The Limestone Cycle. Click here or use the embedded video if you haven't watched the lesson yet.

Question 1. Which of the following elements will form a carbonate?

Oxygen.
Helium.
Flourine.
Sodium.

Question 2. How do we form calcium hydroxide?

Add water to calcium oxide.
Add water to calcium carbonate.
Add water to limestone.
Dissolve limestone in acid.

Question 3. Which of the following elements won't form a carbonate?

Magnesium.
Copper.
Zinc.
Chlorine.

Question 4. What does "thermal decomposition" mean, when referring to the limestone cycle?

It breaks down into simpler compounds when heated.
It uses heat to rot away.
It rots under hot conditions.
It gives out heat as it breaks down.

Question 5. What is the formula of calcium carbonate?

CaO.
CaCO3.
CO2.
Ca(OH)2.

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