539862
Description
Mind Map by evan.madeley, updated more than 1 year ago
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Created by evan.madeley
over 10 years ago
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C1.2 and C1.3
- Limestone
- Calcium Carbonate
- Building Material
- making cement mortar and concrete
- limestone roasted with clay makes cement
- add sand and water to make mortar
- add aggregate concrete is made
- add sand and water to make mortar
- limestone roasted with clay makes cement
- making cement mortar and concrete
- cheap and easy to maintain
- eroded by acid rain
- eroded by acid rain
- quarried
- heating limestone
- decomposes in kiln
- called thermal decomposition
- called thermal decomposition
- breaks down into
- calcium oxide
- add water to produce calcium hydroxide
- add water to produce calcium hydroxide
- carbon dioxide
- calcium oxide
- decomposes in kiln
- Calcium Carbonate
- ores
- earths crust
- called minerals
- contains enough metal to be economically viable
- found by mining
- earths crust
- extracting metals
- unreactive metals obtained by panning
- less reactive than carbon are heated with carbon
- more reactive than carbon electroloysis
- most metals found as metal oxides
- unreactive metals obtained by panning
- extraction of copper
- conducor of heat
- good conductor of electrcity
- good conductor of electrcity
- doesnt react with water
- can be extracted by copper rich ores
- by heating in a furnace
- called smelting
- called smelting
- can then be purified by electroloysis
- by heating in a furnace
- can be found from scrap iron by displacement
- electroloysis
- during electroloysis positive copper irons go to negative electrode
- during electroloysis positive copper irons go to negative electrode
- running out of copper
- extracted from low grade ores
- bioleaching
- uses bacteria to extract low grade ores
- a solution containing bacteria is mixed with a low grade ore
- the bacteria convert into solution where easily extracted
- uses bacteria to extract low grade ores
- phytomining
- uses plants to absorb copper
- as the plant grows it absorbs and stores copper
- the plants are burned the ash produced contains copper
- uses plants to absorb copper
- extracted from low grade ores
- conducor of heat
- iron
- iron oxide
- can be reduced by blast furnace
- produces molten iron
- contains 96% iron and 4% carbon
- contains 96% iron and 4% carbon
- can be reduced by blast furnace
- impure iron is brittle
- impurities removed to make pure iron
- impurities removed to make pure iron
- atoms in pure iron are arranged in layers
- these can easily slide over each other
- this makes it soft and malleable
- this makes it soft and malleable
- these can easily slide over each other
- iron oxide
- alloys
- many metals are too soft for everyday use
- e.g. gold and aluminium
- e.g. gold and aluminium
- they are mixed with small amounts of other metals
- this makes them much harder e.g. coins
- this makes them much harder e.g. coins
- many metals are too soft for everyday use
- steel
- carbon is added to iron to make steel
- steels properties
- high carbon content is hard and strong
- low carbon content is soft and malleable
- stainless steal is hard and resistant to corrosion
- high carbon content is hard and strong
- carbon is added to iron to make steel
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