Calcium Carbonate Decomposition Quiz

What is the initial substance used in the experiment?

• Calcium chloride

• Calcium oxide

• Calcium carbonate

• Carbon dioxide

What is the purpose of heating the calcium carbonate?

• To evaporate it

• To dissolve it

• To decompose it

• To melt it

How long is the calcium carbonate heated over the Bunsen burner?

• Three minutes

• Four minutes

• Two minutes

• One minute

What are the expected products of the decomposition of calcium carbonate?

• Calcium oxide and carbon dioxide

• Calcium chloride and oxygen

• Calcium hydroxide and water

• Calcium sulfate and sulfur dioxide

Why is it difficult to distinguish between calcium carbonate and calcium oxide visually?

• They are both liquids

• They are both gases

• They are both white powders

• They are both black powders

What is used to test for the presence of carbon dioxide?

• A wooden splint

• A litmus paper

• A thermometer

• A pH meter

What happens to the flame of the wooden splint if carbon dioxide is present?

• It burns brighter

• It changes color

• It produces smoke

• It goes out

What does it indicate if the wooden splint flame does not go out?

• The reaction was too slow

• The reaction was too fast

• The reaction was unsuccessful

• Carbon dioxide is present

What is the final product confirmed in the experiment?

• Calcium chloride

• Calcium carbonate

• Calcium sulfate

• Calcium oxide