limestone and its uses. these are chalk cliffs made from a type of limestone formed from the shells...
TRANSCRIPT
Limestone and its uses
These are chalk cliffs made from a type of limestone formed from the shells of
tiny sea plants
Built from limestone blocks
Glass is made from limestone
These pipes are made of concrete- made from cement,sand,and water
Cement is made from limestone and clay
Heating Limestone in a Kiln
Making Quicklime
• Limestone breaks down quickly when we heat it strongly to make quicklime and carbon dioxide
• The equation
• Calcium carbonate calcium oxide + carbon dioxide
• This is called ___________ ____________
Making slaked lime
• Calcium oxide + water Calcium hydroxide
• A little slaked lime dissolves in water and carbon dioxide can be blown through to form calcium carbonate which turns the limewater cloudy
• Calcium hydroxide+ carbon dioxide calcium carbonate + water
Quicklime and slaked lime
• Mortar is made by mixing slaked lime with sand and water
• Mortar holds buildings together
The limestone cycle
• I