Question 1
Question
The number of protons equals
Answer
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The number of electrons
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The number of neutrons
Question 2
Question
Limestone is mainly
Answer
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Sodium carbonate
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Calcium carbonate
-
Magnesium carbonate
Question 3
Question
Metals are:
Choose 3
Question 4
Question
Alloys are softer than pure metals
Question 5
Question
Crude oil is mainly made up of hydrocarbon molecules
Question 6
Question
Sulphur dioxide causes acid rain
Question 7
Question
Cracking means splitting up long- chain hydrocarbons
Question 8
Question
Polymers are:
Choose 3
Question 9
Question
Choose every right answer about vegetable oils (3)
Question 10
Question
Unsaturated oils contain double bonds
Question 11
Question
Hydrophilic ends of an emulsifier latch onto oil molecules
Question 12
Question
Why wasn't Wegner's theory of continental drift accepted for many years? Choose 2
Answer
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He had got his facts mixed up
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He had used inaccurate data in his calculations
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Many believed it to be impossible
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he was ahead of his time
Question 13
Question
The centre of the Earth is mainly made of iron and nickel
Question 14
Question
The early atmosphere was mainly
Answer
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methane
-
oxygen
-
carbon dioxide
-
nitrogen
Question 15
Question
Ethanol can be produced from plant materials
Question 16
Question
Biodiesel can be produced from vegetable oils
Question 17
Question
The mass number is the total number of protons and electrons
Question 18
Question
The atomic number tells you the number of protons or electrons
Question 19
Question
Emulsifiers stop emulsions from seperating out and this gives them a longer shelf life. They allow food companies to produce food lower in fat
Question 20
Question
No one is known to be allergic to emulsifiers so they can be very useful
Question 21
Question
Convection currents in the mantle cause plates to drift
Question 22
Question
The oceans formed when the water vapour condensed
Question 23
Question
the oceans are a natural store of carbon dioxide, however the amount of CO2 we're releasing is making them too acidic
Question 24
Question
Polymers are:
Choose 2
Question 25
Question
Saturated fats are healthier than unsaturated fats