Flashcards
C1.2
Flashcards do conjunto (10)
- 1What is limestone mainly composed of?Calcium Carbonate (CaCO3)
- 2Where is limestone found and what can it be used for?It is quarried and it can be used as a building material
- 3How can calcium carbonate be decomposed and what does it produce?Through thermal decomposition. It produces calcium oxide and carbon dioxide
- 4What 5 carbonates of metals decompose in a similar way? What basic products are produced?Magnesium, sodium, zinc, copper and calcium. Metal oxide and carbon dioxide
- 5When calcium oxide reacts with water what does it produce?Calcium hydroxide
- 6What is calcium hydroxide and what can it be used for?It is an alkali and can be used in the neutralisation of acids
- 7Why is limewater (a solution of calcium hydroxide in water) used to test for carbon dioxide?Because it reacts with the carbon dioxide to produce calcium carbonate and turns the water cloudy.
- 8Why is limestone damaged by acid rain? What is produced?Because carbonates react with acids.
Carbon dioxide, a salt and water is produced. - 9How is cement made?Limestone is heated with clay
- 10How is mortar and concrete made?Mortar: Cement is mixed with sand
Concrete: Cement is mixed with sand and aggregate
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- FlashCards sobre C1.2, criado por happyhats em 09-04-2014.
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