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AQA GCSE C1 Chemistry (quiz 2) Flashcards | StudBud
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AQA GCSE C1 Chemistry (quiz 2)
AQA GCSE C1 Chemistry (quiz 2)
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#AQA #chemistry #core
Flashcards
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Questions
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Answers
1
What is formed at a car's engine when fuels burn at high temperatures?
sulphur dioxide
carbon dioxide
water
nitrogen oxides
2
Magnesium has 12 electrons. What will its electronic structure be?
8,4
2,8,2
6,6
2,8,1
3
What is the name of the process that uses bacteria to extract copper from low-grade ore?
electrolysis
bioleaching
smelting
phytomining
4
Which of the following is not needed to produce ethanol from ethene?
70°C temperature
water
concentrated phosphoric acid catalyst
70 atmospheres of pressure
5
What happens if a fuel containing sulphur is burnt?
Sulphur dioxide is released.
The sulphur reacts with the carbon in the fuel.
The fuel doesn't fully combust.
Sulphur reacts with the oxygen that is needed for combustion
6
In a chemical reaction, the mass of the products is always less than the mass of the reactants.
True
Always
False
Never
7
True or False? "Scrap iron is used to extract copper from solution."
False
True
8
Which of the following is not a reason for using vegetable oils to cook food?
Is healthier for you.
Improves the flavour
Cooks at a higher temperature
Makes food crispier
9
Which of these describes some of Wegener's theory of continental drift?
Pangea broke into smaller pieces and drifted apart.
Mountains were formed as the Earth's crust shrank.
Continents initially existed as a 'supercontinent'.
Earthquakes occurred formed as the Earth's crust shrank.
10
What compound is formed when calcium oxide is added to water?
CaO2H2
CaOH
calcium hydroxide
Ca(OH)2
11
Which of these are products of cracking?
alkenes and CO2
Alkanes and alkenes
nitrogen, oxygen and Ar
carbon dioxide and H2O
12
True or False? "The number of protons in an atom is always equation to the number of neutrons."
True
False
13
What is phytomining?
Process using distillation to to separate metals from ores
Process using plants to separate metals from low-grade ore
Process using bacteria to separate metals from low-grade ore
Process using displacement reactions to extract copper
14
What causes convection currents in the mantle?
Radioactive processes in the crust
Ocean tides
Radioactive processes in the core
Earthquakes
15
Which of the following contributes to global warming?
An increased amount of particulates in the atmosphere
An increasing amount of CO2 in the atmosphere.
Large amounts of SO2 released from burning fossil fuels.
16
A vertical column on the Periodic Table is called a __________.
rule
trunk
group
period
17
What causes tectonic plates to move?
the Earth's revolution
Convection currents in the core
the Earth's rotation
Convection currents in the mantle
18
Iron straight from the blast furnace is used as cast iron; it is too brittle for most uses.
Always
Never
True
False
19
The Earth's crust and oceans are the only sources of minerals and resources that humans need.
False
True
20
Which part of an emulsifier binds to oil molecules?
hydrophilic
hydrophobic
water-hating
water-loving
21
What is the process called when a fuel burns without enough oxygen?
complete combustion
partial combustion
incomplete combustion
oxidation
22
True or False? "Scientists think the early atmosphere contained more CO
2
than oxygen."
True
False
23
Steel is an alloy made of iron what other element?
copper
cobalt
carbon
chromium
24
What is the name for the elements in Group 0 of the Periodic Table?
Noble gases
Alkali metals
Alkali Earth metals
Halogens
25
Which of these gases makes up the smallest proportion of our atmosphere?
argon
oxygen
nitrogen
carbon dioxide
26
Whose experiment set out to prove the primoridal soup theory in the 1950s?
Wegener's
Mendeleev's
Miller and Urey's
Bohr's
27
________ is a process whereby smaller hydrocarbons are made from longer ones.
cracking
combustion
polymerisation
hydrocarbonisation
28
True or False? "Vegetable oils cannot be used as fuels."
True
False
29
True or False? "Transition metals are too bendy to be used as structural materials."
False
True
30
Which of these effects on the planet is not associated with burning fossil fuels?
'holes' in the ozone layer
Increased amount of carbon dioxide in the atmosphere
Increased amount of oxygen in the oceans
Global warming
31
Which of these cannot be caused by a sudden tectonic movement?
Volcanoes
Hurricanes
Earthquakes
Tsunamis
32
__________ fats contain ______ bonds.
saturated...............C=C...
unsaturated........C-C...
unsaturated........C=C...
saturated........C-C...