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

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


Question 2. What is the formula of calcium carbonate?

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


Question 3. What is formed when we add any carbonate to an acid?

An alkaline solution.
Hydrogen and carbon dioxide.
A salt and hydrogen.
A salt and carbon dioxide.


Question 4. Which of the following elements will form a carbonate?

Sodium.
Flourine.
Helium.
Oxygen.


Question 5. What is formed when we strongly heat limestone?

Calcium oxide.
Calcium.
Calcium carbonate.
Calcium hydroxide.


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