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. How do we form calcium hydroxide?

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


Question 2. What is the standard test for carbon dioxide?

Bubble it through limewater, where it will form a white calcium carbonate precipitate.
Attempt to light it with a lit wooden spill, and it will cause a "squeaky pop" noise.
Add it to water, and it will raise the pH of the water.
Introduce a smouldering wooden spill, and it will reignite.


Question 3. What is the important compound found in limestone?

Calcium carbonate.
Calcium.
Calcium oxide.
Calcium hydroxide.


Question 4. What is the formula of calcium carbonate?

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


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

Calcium carbonate.
Calcium oxide.
Calcium hydroxide.
Calcium.


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