C2#Revision#Ques1ons## - WordPress.com · C2#Revision#cards# Answer9 •...
Transcript of C2#Revision#Ques1ons## - WordPress.com · C2#Revision#cards# Answer9 •...
C2 Revision cards
C2 Revision Ques1ons
C2 Revision cards
Ques1on 1
• What are the three main parts of the Earth?
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Answer 1 of 50
• Crust, Mantle and Core
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Ques1on 2
• What are the three different types of rock?
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Answer 2
• Igneous, metamorphic and sedimentary
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Ques1on 3
Which rocks are the hardest and which are the soIest? Explain why
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Answer 3
• Igneous are hardest as they have interlocking crystals. Sedimentary is soIest
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Ques1on 4
Name three bad things about quarries
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Answer 4
• Dust pollu1on, ruins landscape, noise from explosions, increased lorries
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Ques1on 5
• What is concrete made from?
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Answer 5
• Cement, sand, gravel and water
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Ques1on 6
What are tectonic plates?
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Answer 6
• Large parts of the lithosphere that move across the mantle
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Ques1on 7
• Give two reasons why people live near volcanoes
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Answer 7
• Fer1le soil and no erup1ons for a long 1me
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Ques1on 8
• Which igneous rocks have the largest crystals?
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Answer 8
• Those that cool inside the volcano (the ones that cool slowly)
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Ques1on 9
• What can you do to a quarry once it has been used?
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Answer 9
• Cover with plants and grass, fill with water for lake, fill with rubbish for landfill
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Ques1on 10
• Describe what a convec1on current is
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Answer 10
• When a fluid gets heated and moves up when hot and sinks when cold
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Ques1on 11
• How are igneous rocks made?
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Answer 11
• Lava cooled down
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Ques1on 12
• Name three rocks that can be used for building materials
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Answer 12
Limestone, marble and granite
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Ques1on 13
• Which is concrete stronger from, compression or tension?
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Answer 13
Compression
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Ques1on 14
• Name a use of copper
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Answer 14
• Electrical wires
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Ques1on 15
• How do we remove copper from its ore?
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Answer 15
• Heat it with carbon or electrolysis
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Ques1on 16
• What happens when you heat calcium carbonate? What is this called?
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Answer 16
• Thermal decomposi1on. Breaks down into calcium oxide and carbon dioxide
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Ques1on 17
• How can we reinforce concrete?
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Answer 17
• Pu`ng steel rods in the concrete
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Ques1on 18
• How are sedimentary rocks made?
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Answer 18
• Sediments of rocks compressed under the weight of other rocks
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Ques1on 19
• What is subduc1on?
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Answer 19
• When one plate sinks below another
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Ques1on 20
• What is the name for the outer layer of the Earth?
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Answer 20
• Crust/ lithosphere
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Ques1on 21
• How are metamorphic rocks made?
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Answer 21
• Sedimentary rocks put under a lot of heat and pressure
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Ques1on 22
• Name three good things about quarries
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Answer 22
• Creates jobs, get rocks for buildings, improves economy
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Ques1on 23
• What is a symbol equa1on for the thermal decomposi1on of calcium carbonate?
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Answer 23
• CaCO3→CaO +CO2
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Ques1on 24
• Why do we recycle copper?
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Answer 24
• Saves resources, money and energy
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Ques1on 25
• How is cement made?
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Answer 25
Limestone is heated with clay)
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Ques1on 26
What is a disadvantage with high temperature and pressure in the Haber process?
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Answer 26
• High costs (for stronger containers), cost of containers and energy
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Ques1on 27
• What are the op1mum condi1ons for the Haber process?
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Ques1on 28
• What does increasing the pressure achieve in the Haber process?
• What does increasing the temperature achieve in the Haber process?
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Answer 28
• Increasing pressure increases the yield
• Increasing temperature decreases the yield but increases the rate
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Ques1on 29
• Name 3 advantages of aluminium compared to steel
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Answer 29
• Less dense (lighter), does not rust, more malleable
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Ques1on 30
• Name 3 things you could do to prevent a material rus1ng?
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Answer 30
• Paint it, cover it in oil, seal it from oxygen and water
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Ques1on 31
• In electrolysis, what is the impure copper connected to and what is the purer copper connected to?
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Answer 31
• Anode = Impure • Cathode = Pure
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Ques1on 32
• What does corrode mean?
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Answer 32
• To lose strength due to chemical agack
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Ques1on 33
• What two ingredients are needed for the Haber process? Where do we get these from?
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Answer 33
• Hydrogen (crude oil) and Nitrogen (from the air)
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Ques1on 34
• What else will affect the cost of ammonia?
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Answer 34
• Cost of labour, building, energy, reactants, speed of reac1on
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Ques1on 35
• What is the liquid used in electrolysis? What is used to purify copper?
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Answer 35
• Copper sulphate
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Ques1on 36
• What is a catalyst? Name three proper1es of a catalyst?
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Answer 36
• A material that increases the rate of reac1on. Unreacted, usually unique to that reac1on and oIen only small amounts are needed.
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Ques1on 37
• What is meant by a reversible reac1on?
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Answer 37
• A reac1on that can go in both direc1ons
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Ques1on 38
• What is the word and symbol equa1on for the Haber process?
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Answer 38
• Has small holes (from expanded PTFE), that water droplets cannot pass through but water vapour can.
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Ques1on 39
• What type of bonds hold hydrocarbon molecules together?
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Ques1on 40
• Give an example of a smart material and its use
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Answer 40
• Ni1nol. Goes back to original shape when heated
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Ques1on 41
• What is the advantage of universal indicator over litmus paper?
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• Tells you how acidic/ alkaline something is according to scale
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Ques1on 42
• What is an alloy? Give an example
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Answer 42
• A mixture of a metal with another metal or with carbon. Steel, amalgam
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Ques1on 43
• Complete the equa1on: Hydrochloric acid + Sodium Hydroxide =
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Answer 43
• Sodium chloride + water
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Ques1on 44
• What two things are always made in a neutralisa1on reac1on?
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Answer 44
• Water and a salt
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Ques1on 45
• What is a nitrogenous fer1liser? Give two examples
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Answer 45
• Fer1liser containing nitrogen-‐ Ammonium nitrate, ammonium phosphate
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Ques1on46
• What do we use ammonia for? Why we use fer1lisers
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Answer 46
• Fer1lisers, explosives, nitric acid and cleaners. Increase crop yield
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Ques1on 47
• What is eutrophica1on?
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Answer 47
• When water becomes rich with nutrients, plants grow on surface causing plants at bogom to die and algae to form
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Ques1on 48
• What can we do to extract chlorine from salt water (brine)?
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Answer 48
• Electrolysis of salt water
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Ques1on 49
• What are the 3 essen1al elements plants need?
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Answer 49
• Nitrogen, phosphorus, potassium
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Ques1on 50
• Name 2 ways we can extract salt from the Earth
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Answer 50
• Digging and cu`ng it, pumping water down a mine and extrac1ng the dissolved salt
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