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C1.2.1 Calcium carbonate
- Limestone
- Is mainly composed of the compound calcium carbonate
- CaCO3
- can be decomposed by heating (thermal decomposition)
- to make carbon dioxide and
- calcium oxide: CaO
- reacts with water to produce
- calcium hydroxide: Ca(OH)2
- this is a an
alkali and
thus can be
used in the
neutralisation
of acids
- aqueous solution of this (limewater) + carbon dioxide
- limewater is a test for
carbon dioxide, the
positive result of which
turns it cloudy
- This cloudiness is a precipiate: CaCO3
- This cloudiness is a precipiate: CaCO3
- limewater is a test for
carbon dioxide, the
positive result of which
turns it cloudy
- this is a an
alkali and
thus can be
used in the
neutralisation
of acids
- calcium hydroxide: Ca(OH)2
- reacts with water to produce
- calcium oxide: CaO
- the carbonates of magnesium,
copper, zinc, calcium, and sodium
thermally decompose in a similar way
- all decompose with heat to
produce carbon dioxide and the
metal oxide
- all decompose with heat to
produce carbon dioxide and the
metal oxide
- to make carbon dioxide and
- can be decomposed by heating (thermal decomposition)
- CaCO3
- Is quarried and can be used as a building material
- However, carbonates react with acids to form carbon dioxide, a salt and water
- Therefore limestone buildings are damaged by acid rain
- Therefore limestone buildings are damaged by acid rain
- However, carbonates react with acids to form carbon dioxide, a salt and water
- Is mainly composed of the compound calcium carbonate
- Limestone is heated with clay to make cement
- Cement is mixed with sand to make mortar
- Cement is mixed with sand and aggregate to make concrete
- Cement is mixed with sand to make mortar
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