1836873
Description
Mind Map by chancice.branscombe, updated more than 1 year ago
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Created by chancice.branscombe
over 9 years ago
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GCSE Chemistry C1.2 -
Limestone & Building
Materials
- Limestone
- Calcium carbonate
(CaCO3) also known as
Limestone is a
sedimentary rock. This
can be obtained by
quarrying and cut into
blocks. It is used as a
building material to build
walls of houses.
- Advanatages of quarrying:
- Creates Jobs
- Supplies limestone for
glass, stell, cement
industries in the area
- Increases business for
local workers.
- Increases business for
local workers.
- Supplies limestone for
glass, stell, cement
industries in the area
- Creates Jobs
- Disadvantages of quarrying:
- Destroys habitats
- Noise pollution
- Dust pollution
- Destroys landscape
- Dust will destroy local
farmers crops
- Dust will destroy local
farmers crops
- Destroys landscape
- Dust pollution
- Noise pollution
- Destroys habitats
- Advanatages of quarrying:
- Thermal Decomposition
- Calcium carbonate decomposes
on heat to produce calcium
oxide and carbon dioxide. This
reaction is known as thermal
decomposition
- Other metal carbonates also
undergo thermal
decomposition, also producing
a metal oxide and carbon
dioxide gas.
- Calcium carbonate decomposes
on heat to produce calcium
oxide and carbon dioxide. This
reaction is known as thermal
decomposition
- Reaction of calcium hydroxide
- Calcium hydroxide reacts with
carbon dioxide to produce calcium
carbonate. This reaction is used as
a test for carbon dioxide gas (if the
limewater AKA Calcium hyrdoxide
turns cloudy, the test is positive for
carbon dioxide).
- Calcium hydroxide reacts with
carbon dioxide to produce calcium
carbonate. This reaction is used as
a test for carbon dioxide gas (if the
limewater AKA Calcium hyrdoxide
turns cloudy, the test is positive for
carbon dioxide).
- Calcium carbonate
(CaCO3) also known as
Limestone is a
sedimentary rock. This
can be obtained by
quarrying and cut into
blocks. It is used as a
building material to build
walls of houses.
- Cement, Mortar, Concrete
- Cement - Powdered limestone and powered clay are
mixed in a rotary kiln to produce dry cement.
- Mortar = Cement + sand +water
- Concrete = Aggragate (crushed rock) + sand + water
- Cement - Powdered limestone and powered clay are
mixed in a rotary kiln to produce dry cement.
- Reacting Metal Carbonates
- Metal carbonates + acid --> Salt + Water + Carbon dioxide
- e.g) Calcium carbonate + Hydrochloric acid --> Calcium Chloride + Water + Carbon Dioxide
- This means that over time, the
metal carbonate, calcium carbonate
can be eroded away by acid rain
having the potential to destroy
buildings.
- This means that over time, the
metal carbonate, calcium carbonate
can be eroded away by acid rain
having the potential to destroy
buildings.
- e.g) Calcium carbonate + Hydrochloric acid --> Calcium Chloride + Water + Carbon Dioxide
- Metal carbonates + acid --> Salt + Water + Carbon dioxide
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