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. The formation of calcium hydroxide is exothermic. What does "exothermic" mean?

It releases heat.
It absorbs heat.
It doesn't change in temperature.
It only happens when it's heated.

Question 2. How do we form calcium hydroxide?

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

Question 3. Which of the following elements will form a carbonate?


Question 4. What is formed when we add any carbonate to an acid?

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

Question 5. What is the important compound found in limestone?

Calcium oxide.
Calcium carbonate.
Calcium hydroxide.

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