Limestone Flashcards
What happens when limestone (CaCO3) is heated?
Calcium carbonate is thermally decomposed into calcium oxide+carbon dioxide
What happens when limestone ( CaC03) is added to acid?
Calcium caribanye is broken down into a salt, water and carbon dioxide
This is why buildings can get damaged from acid rain
What happens when calcium oxide is added to water?
Calcium oxide reacts with water to form calcium hydroxide ( lime water)
How is limestone useful?
Limestone is used to make cement
Cement can be mixed with sand and water to make mortar
Cement can be mixed with sand, water an gravel to make concrete
What are the advantages and disadvantages of using limestone as a building material?
Ad - limestone is cheap
Easily cut and concrete is extremely useful
Dis- quarrying limestone causes noise , pollution and is ugly
Damage by acid rain
What is limestone and what is it used for?
Limestone is calcium carbonate
Dug up from the ground
Used as a building material
What is calcium hydroxide?
How is it used and what does it test for?
Calcium hydroxide is limewater
It tests for the presence of carbon dioxide
What does calcium hydroxide + carbon dioxide form?
Calcium carbonate
What is the chemical name and chemical formula for limestone ?
CaC03
What happens during the thermal decomposition of limestone?
What does calcium oxide and water react to form?
Calcium Carbonate - calcium oxide + carbon dioxide
Calcium hydroxide
What do metal carbonates and acids form?
Carbon dioxide, water and salt
What is limestone used to provide?
Cement , concrete, glass and building materials
•heated with clay = cement
•cement+sand = mortar
• sand+gravel = concrete
What is a quarry?
What the the pros and cons of quarrying for materials?
A quarry is a place where large amounts of raw materials such as ores and limestone and removed from the ground
Pros - employment / economic benefits
Cons - noisy / ugly / habitat destruction
