C13 Carbonates

What is the chemical formula of calcium carbonate

• Ca₂CO₃
• Ca(CO)₃
• CaCO₃
• CaCO

How is calcium oxide formed?

• thermal decomposition of calcium carbonate
• Displacement of calcium carbonate
• combustion of calcium carbonate
• reaction of calcium and water

What are the products of thermal decomposition of calcium carbonate

• calcium oxide only
• calcium hydroxide and water
• calcium oxide and carbon dioxide
• Calcium hydroxide only

General name of chemical that is mainly a building material and is quarried

• Limestone
• calcium oxide
• calcium hydroxide
• limewater

How is calcium hydroxide solution produced?

• Calcium carbonate and water
• Calcium oxide and water
• Calcium carbonate and acid
• calcium oxide and acid

How do you make cement?

• Limestone heated with clay
• Calcium hydroxide and sand
• Limestone and water

What do we use limewater to test for?

• Hydrogen
• Oxygen
• Carbon Dioxide
• Chlorine

I add some limestone to hydrochloric acid and I see bubbles given off. What gas is it?

• Oxygen
• Hydrogen
• Carbon dioxide
• Chlorine

Why does limestone lose mass as it is heated

• Oxygen is given off
• Carbon dioxide is given off
• The limestone is shrinking
• The limestone is evaporating

What is the key chemistry principle behind flue gas desulfurization?

• neutralisation

• redox

• electrolysis

• fractional distillation