It's quarried and can be used as a building material
2 of 27
How is it decomposed, what does this make
Thermally decomposed to make calcium oxide and carbon dioxide: CaO (s) + CO2 (g)
3 of 27
which other carbonates decompose in a similar way when heated
magnesium, copper, zinc and sodium
4 of 27
word equation for this
metal carbonate = metal oxide + carbon dioxide
5 of 27
what can't all group 1 metal carbonates do
decompose at the temp.s reached by a Bunsen burner
6 of 27
calcium oxide + water =
calcium hydroxide: Ca(OH)2
7 of 27
what is this product, and uses of it
an alkali that can be used in the neutralisation of acids (in lakes and soils affected by acid rain)
8 of 27
what is a solution of calcium hydroxide in water
limewater
9 of 27
limewater + carbon dioxide =
calcium carbonate
10 of 27
what is limewater used for
a test for carbon dioxide
11 of 27
what happens
carbon dioxide turns limewater cloudy
12 of 27
carbonate + acid =
carbon dioxide, salt, water
13 of 27
which metal carbonates does this apply to
magnesium, copper, zinc, calcium and sodium
14 of 27
how do you know the reaction's taken place
they fizz when in contact with acids, and the carbon dioxide released can be detected using limewater
15 of 27
what salt would sulfuric acid make
metal sulfate
16 of 27
what is limestone damaged by
acid rain
17 of 27
how is cement made
heating powdered limestone with clay. Cement is an ingredient in mortar and concrete
18 of 27
how is mortar made
used to join bricks together, made by mixing cement with sand and water
19 of 27
how is concrete made
mixing cement with sand, water and aggregate (crushed rock)
20 of 27
what happens when rainwater comes into contact with limestone, cement and mortar
slowly react with carbon dioxide dissolved in rainwater and wear away. This damages walls made from limestone, and leaves gaps between bricks in buildings
21 of 27
what affect does burning fossil fuels have
pollution makes the rain more acidic than it should be, and this acid rain makes these problems worse
22 of 27
positives of concrete
easily formed into different shapes before it sets hard. It is strong when squashed/ can be made much stronger by reinforcing it with steel
23 of 27
negatives of concrete
weak when bent or stretched/ Some people think that concrete buildings and bridges are unattractive
24 of 27
negatives of quarrying
process makes dust noise in quiet areas, needs to be transported away from quarries, destroys habitats of animals
25 of 27
negatives of producing building materials from limestone
cement factories produce lots of dust causing breathing problems, energy needed for producing cement usually from burning fossil fuels causing pollution
26 of 27
positives of using limestone
provides job in the business, benefits local economy, valuable natural resource used to make cement, its products can neutralise acidic soil, helping with food socially
27 of 27
Other cards in this set
Card 2
Front
How's it obtained and what's it used for
Back
It's quarried and can be used as a building material
Card 3
Front
How is it decomposed, what does this make
Back
Card 4
Front
which other carbonates decompose in a similar way when heated
Comments
No comments have yet been made