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?

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


Question 2. What is the important compound found in limestone?

Calcium oxide.
Calcium.
Calcium hydroxide.
Calcium carbonate.


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

Chlorine.
Zinc.
Copper.
Magnesium.


Question 4. What is the standard test for carbon dioxide?

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


Question 5. What is the formula of calcium carbonate?

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


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