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 is formed when we add any carbonate to an acid?

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


Question 2. Which of the following elements won't form a carbonate?

Copper.
Zinc.
Chlorine.
Magnesium.


Question 3. What is formed when we strongly heat limestone?

Calcium oxide.
Calcium.
Calcium carbonate.
Calcium hydroxide.


Question 4. The formation of calcium hydroxide is exothermic. What does "exothermic" mean?

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


Question 5. What is the formula of calcium carbonate?

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


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