C1 Knowledge Test
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Write the formula for the first three alkanes
Write the formula for the first two alkenes
How do we test for the presence of alkenes?
What process breaks down large hydrocarbons?
What substance is formed from the polymerisation of ethane?
Complete this table to give the uses of these polymers:
Polymer
Polyethene
Polypropene
Polychloroethene (PVC)
Teflon
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What mineral is limestone made from?
Give two disadvantages of quarrying limestone
Give one advantage of quarrying limestone
Chalk, limestone and marble are all made of which mineral?
Calcium carbonate is mined to form which three everyday items?
Write a word equation for the thermal decomposition of limestone
Where did the gases that formed the Earths early atmosphere come from?
How do scientists use rocks to work out the composition of the Earth’s early atmosphere?
Name 4 gases other than oxygen and carbon dioxide that were present in the Earth’s early atmosphere.
How much CO2 was present in the Earths early atmosphere?
Describe two ways that the carbon dioxide levels in the early atmosphere were reduced.
How much oxygen was present in the Earths early atmosphere?
How did photosynthesis affect the composition of the atmosphere?
How do scientists believe the oceans were formed?
Complete this table to show the current composition of the Earths atmosphere:
Gas
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Formula
% in dry air
What effect does deforestation have on the amount of carbon dioxide in the atmosphere.
Explain your answer
State 3 ways humans changed the composition of the atmosphere.
How do we test for carbon dioxide?
What two different substances does incomplete combustion produce as compared to complete combustion?
Give two ways scientists are trying to reduce the amount of carbon dioxide in the atmosphere.
Why is carbon monoxide toxic?
What 2 main gases do volcanoes release into the atmosphere.
What type of rock is marble?
Name 2 sedimentary rocks
How are sedimentary rocks formed?
What two factors are required to form metamorphic rock?
What are igneous rocks formed from?
What affects the size of crystals in in igneous rock?
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Name an igneous rock
Which type of rock may contain fossils?
Which type of rock is easy to wear away?
What can you say about the mass of reactants and the mass of products in a reaction?
What are the smallest particles of an element that can take part in a reaction?
Write a word equation for the reaction between water and calcium oxide.
What is formed when calcium hydroxide is dissolved in water?
Give 2 uses of calcium carbonate in industry.
Give 2 uses of hydrochloric acid in the stomach.
Write a word equation for the reaction between hydrochloric acid and calcium carbonate
What type of salts are formed from hydrochloric acid; nitric acid; sulfuric acid
How do we test for oxygen?
How do we test for Hydrogen?
How do we test for chlorine?
What three substances can neutralise acids?
What process decomposes compounds using an electrical current?
How can chlorine be extracted from seawater?
Name two substances produced from chlorine.
What is produced during the electrolysis of water?
Name the top two and bottom two metals in the reactivity series
Why is gold used for jewellery?
Why is copper used for electrical wires?
Where do most metals originate?
What is an alloy?
Why is iron often alloyed?
State two uses of new alloys developed by scientists.
Describe two ways of extracting metals from their ores.
What type of reaction involves gain of oxygen?
What is another term for the oxidation of metals?
Which part of the reactivity series contains metals least likely to corrode?
What two elements do hydrocarbons contain?
Write a word equation for the combustion of a hydrocarbon.
Crude oil is a mixture of…
What is the purpose of fractional distillation?
Complete this table to give a use of each of these fractions:
Fraction
Gases
petrol
Kerosene
Diesel oil
Fuel oil
Bitumen
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Use
What happens to the boiling point of the fractions as they get longer?
What gas is produced due to the impurities in fossil fuels?
What substance weathers limestone, damages trees and makes lakes and rivers acidic?
Name 3 greenhouse gases.
What is ethanol produced from?
Give 4 factors of a good fuel.
C1 Knowledge Test Answers
1. CH4, C2H6, C3H8
2. C2H4, C3H6
3. Bromine water will discolour
4. Cracking
5. Polyethene
6. .
Polymer
Polyethene
Polypropene
Polychloroethene (PVC)
Teflon
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Use
Plastic bags, plastic bottles, cling film, insulation
for electrical wires
Buckets and bowls
Window frames, gutters, pipes, insulation for
electrical wires
Non stick coatings for saucepans, bearings for
skis, containers for corrosive substances, stain
proof coating for carpets, insulation for electrical
wires
Calcium Carbonate
Noise pollution, destroys habitats, land cannot be used for farming, destroy views
Jobs, valuable export.
Calcium Carbonate
Glass, cement and concrete
Calcium carbonate  Calcium oxide + carbon dioxide
Volcanic activity
Analyse the minerals in them and look for oxides.
Nitrogen, ammonia, methane, water vapour
Lots
CO2 dissolved into the oceans, incorporation into marine organisms shells.
Little/none
Removed CO2, added O2
Condensation of water vapour.
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Gas
Formula
% in dry air
Nitrogen
N2
78
Oxygen
O2
21
Argon
Ar
0.9
Carbon Dioxide
CO2
0.04
other
trace
22. Increases it
23. Trees no longer remove carbon dioxide through photosynthesis.
24. Burning fossil fuels, farming, deforestation
25. Turns limewater cloudy
26. Carbon monoxide and carbon
27. Iron seeding, converting carbon dioxide into hydrocarbons
28. Takes the place of oxygen in RBC
29. Carbon dioxide and nitrogen
30. Metamorphic
31. Chalk and limestone
32. Compaction of layers of sediment over a long time
33. Heat and pressure
34. Cooled magma or lava
35. The rate at which it cooled down
36. Granite
37. Sedimentary
38. Sedimentary
39. The same
40. Atoms
41. Calcium oxide + water  Calcium hydroxide
42. Limewater
43. Neutralise soils, remove gases from powerstations
44. Helps digestion, kills bacteria
45. hydrochloric acid + calcium carbonate  calcium chloride + water + carbon dioxide
46. Chlorides, nitrates, sulfates
47. Relight a glowing splint
48. Burns with a squeaks pop
49. Bleach damp blue litmus paper
50. Metal oxides, metal hydroxides, metal carbonates
51. Electrolysis
52. Electrolysis
53. Bleach, PVC
54. Hydrogen and oxygen
55. Potassium, sodium and gold, platinum
56. Unreactive and does not corrode
57. Good electrical conductor
58. In the Earths crust as ores
59. A mixture of two metals
60. Increase strength and reduce corrosion
61. Stents in damaged blood vessels, memory spectacle frames
62. Heating/reduction with carbon, electrolysis
63. Oxidation
64. Corrosion
65. Bottom
66. Hydrogen and carbon
67. Hydrocarbon + Oxygen  Carbon Dioxide + Water
68. Hydrocarbons
69. Splits crude oil into simpler substances
70. .
Fraction
Use
Gases
Domestic heating and cooking
petrol
Fuel for cars
Kerosene
Fuel for aircraft
Diesel oil
Fuel for cars and trains
Fuel oil
Fuel for ships and power stations
Bitumen
Surfacing roads and roofs
71. Increases
72. Sulfur dioxide
73. Acid rain
74. Carbon dioxide, methane, water vapour
75. Sugar beet or sugar cane
76.
Ease of burning, ease of transport, amount of smoke produced, amount of heat energy liberated.