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C1.2 Glossary

Rocks and Building Materials Glossary

Calcium carbonate which rock does it make up? What is it’s formula? The main compound found in limestone. It is a white solid whose chemical formula is CaCO3.
Calcium hydroxide-How is it made? What is it used for? A white solid made by reacting calcium oxide with water. It is used as a cheap alkali in industry.
Calcium oxide-How is it made?What is it’s chemical fomula? A white solid made by heating limestone strongly e.g. in a lime kiln.Chemical formula is CaO
What is cement? A building material made by heating limestone and clay.
What is concrete? A building material made by mixing cement, sand and aggregate (crushed rock) with water.
What is the test for carbon dioxide gas? Add limewater and it turns milky/cloudy/white.
What is limewater? The common name for calcium hydroxide solution- used as a test for carbon dioxide gas.
What is mortar and how is it made? A building material used to bind bricks together. It is made by mixing cement and sand with water.
What is thermal decomposition? The breakdown of a compound by heat.
The process by which limestone is turned in to calcium oxide is called……? Thermal decomposition.
Created by: ChosenHill