Snapquiz - The Limestone Cycle

Question 1. What is the formula of calcium carbonate?

Ca(OH)₂.
CaCO₃.
CaO.
CO₂.

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

Calcium carbonate.
Calcium hydroxide.
Calcium.
Calcium oxide.

Question 3. What is the standard test for carbon dioxide?

Add it to water, and it will raise the pH of the water.
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.
Introduce a smouldering wooden spill, and it will reignite.

Question 4. Which of the following elements won't form a carbonate?

Chlorine.
Zinc.
Magnesium.
Copper.

Question 5. What is formed when we add any carbonate to an acid?

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

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