Question 1
Question
Which of these can be found in the nucleus of an atom?
Question 2
Question
Number of protons [blank_start]equals[blank_end] number of electrons
Question 3
Question
Elements in the same group have...
Question 4
Question
The mass number is the total number of [blank_start]protons[blank_end] and neutrons
Question 5
Question
What's the maximum number of electrons in the first shell?
Question 6
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An ionic bond is formed between 2 non-metals.
Question 7
Question
Covalent bonding involves [blank_start]sharing[blank_end] electrons.
Question 8
Question
Limestone thermally decomposes to produce ............ + carbon dioxide
Answer
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calcium oxide
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calcium hydroxide
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water
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limewater
Question 9
Question
Calcium carbonate reacts with acid to produce a calcium salt, [blank_start]carbon dioxide[blank_end] and water.
Answer
-
carbon dioxide
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hydrogen
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oxygen
Question 10
Question
Calcium oxide + water -----> ...........................?
Answer
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Calcium hydroxide
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Calcium carbonate
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Limewater
Question 11
Question
Bubbling gas through limewater is the test for ..............?
Answer
-
carbon dioxide
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hydrogen
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limestone
Question 12
Question
Limestone can be used to make.....................?
Answer
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cement
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mortar
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concrete
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graphite
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marble
Question 13
Question
What are some disadvantages of quarrying limestone?
Answer
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Destroys habitats
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Noise & dust pollution
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Causes acid rain
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It is cheap & quick
Question 14
Question
A metal ore is a rock which contains enough metal to make it worthwhile extracting metal from it
Question 15
Question
How will metals that are more reactive than carbon be extracted?
Answer
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By electrolysis
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By reduction with carbon
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By smelting
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By oxidation
Question 16
Question
Which of these can an electrolyte NOT be made of?
Question 17
Question
In a solution of a dissolved metal compound, a more reactive metal with displace a less reactive metal as it bonds [blank_start]more[blank_end] strongly to the compound.
Question 18
Question
Which of these describes the bioleaching process?
Answer
-
Bacteria separate copper from copper sulphide, get energy from the bond between them, separating the copper and leaving a leachate with copper.
-
Plants are grown in soil that contains copper, copper builds up inside leaves, plants are harvested, dried & burned, copper is collected from ash in furnace
Question 19
Question
What are some positives of metal extraction?
Answer
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Provides local people with jobs
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Provides us with useful products
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Doesn't pollute the environment
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Doesn't permanently damage the environment
Question 20
Question
What are some properties of all metals?
Question 21
Question
Iron that has come straight from the blast furnace contains what percentage of iron?
Question 22
Question
Bronze is made of [blank_start]copper[blank_end] and tin.
Question 23
Question
Why can crude oil be separated into different fractions?
Answer
-
It is a mixture of hydrocarbons
-
It contains hydrocarbon compounds
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It contains elements in their pure forms
Question 24
Question
A hydrocarbon can be tapped when it reaches its ................... ?
Answer
-
Boiling point
-
Melting point
Question 25
Question
Hydrocarbons (alkanes) are chains of carbon atoms surrounded by [blank_start]hydrogen[blank_end] atoms.
Question 26
Question
Which of the following are true? The shorter the molecule..........
(HINT: there are three!)
Answer
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the less viscous it is
-
the more viscous it is
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the more volatile it is
-
the less volatile it is
-
the more flammable it is
-
the less flammable it is
Question 27
Question
Why is crude oil a good fuel to use?
Answer
-
It burns cleanly
-
It is easier & cheaper
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It is more reliable
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It doesn't pollute
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It is a renewable fuel
Question 28
Question
Which of these can be produced when burning a fossil fuel, other than carbon dioxide & water vapour?
Answer
-
Sulphur dioxide
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Nitrogen oxides
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Carbon monoxide
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Hydrogen
-
Oxygen
Question 29
Question
Which of these fuels are 'carbon neutral'?
Question 30
Question
Cracking involves passing a vaporised hydrocarbon over a powdered catalyst at a high temperature. Which of the following are true?
Answer
-
Aluminium oxide is the catalyst used
-
Nickel is the catalyst used
-
The temperature is about 400*C - 700*C
-
The temperature is about 900*C - 1200*C
Question 31
Question
Alkenes contain a carbon double bond which means that they are [blank_start]unsaturated[blank_end].
Question 32
Question
Which of these describes the fermentation process to produce ethanol?
Answer
-
sugar ----> ethanol + carbon dioxide
-
ethene + water vapour ----> ethanol
-
sugar ----> ethanol + water
Question 33
Question
The test for alkenes involves adding bromine water and, if an alkene is present, it will turn from colourless to brown.
Question 34
Question
What are the problems with the fermentation process?
Answer
-
It produces impure ethanol
-
It is a batch process
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It is a continuous process
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It uses a low temperature
Question 35
Question
Polymerisation involves joining together many monomers to form [blank_start]polymers[blank_end].
Question 36
Question
Which of these are uses of polymers?
Answer
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Memory foam
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Plastic bags
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Car bodies
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Sun cream
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Wound dressings
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Tooth fillings
Question 37
Question
Vegetable oils provide a lot of [blank_start]energy[blank_end].
Question 38
Question
Why is it good that vegetable oils have high boiling points?
Question 39
Question
[blank_start]Unsaturated[blank_end] oils contain a C=C double bond.
Question 40
Question
How can unsaturated oils be hardened?
Answer
-
React with hydrogen
-
React with water vapour
-
Nickel catalyst
-
Iron catalyst
-
60 degrees C
-
400 degrees C
Question 41
Question
Partially hydrogenated vegetable oils are much better for you than saturated fats.
Question 42
Question
Which of these are correct about emulsifiers?
Answer
-
Emulsifier molecules have a hydrophilic head that is attracted to water
-
Emulsifier molecules have a hydrophobic tail that is attracted to oil
-
Emulsifier molecules have a hydrophilic tail that is attracted to water
-
Emulsifier molecules have a hydrophobic head that is attracted to oil
Question 43
Question
What evidence did Wegener use to come up with his theory of Continental Drift?
Answer
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Similar fossils found on opposite sides of the Atlantic Ocean
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The idea of land bridges
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The coastlines of Africa & S. America seeming to 'match'
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Matching layers found in rocks in different continents
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Measuring the movements of the continents
Question 44
Question
Wegener's theory of Continental Drift: 300 million years ago, there was one [blank_start]supercontinent[blank_end] (Pangaea) which broke into smaller continents which are still slowly drifting apart.
Question 45
Question
The mantle has all the properties of a [blank_start]solid[blank_end] but it can flow very slowly.
Question 46
Question
Radioactive decay in the Earth's core releases [blank_start]heat[blank_end] energy which causes the mantle to flow in convection currents - moving the tectonic plates.
Question 47
Question
Where did most of the carbon dioxide in the Earth's early atmosphere go?
Answer
-
Dissolved into the oceans
-
Absorbed by photosynthesis
-
'Locked up' in sedimentary rocks
Question 48
Question
What does the ozone layer do?
Question 49
Question
Miller-Urey experiment set up: Sealed [blank_start]nitrogen[blank_end], hydrogen, ammonia & methane into their apparatus & applied an electrical charge for a week.
Question 50
Question
Why is carbon dioxide removed before air is cooled to -200 degrees C in the fractional distillation of air?