8499863
Beschreibung
Quiz von Lily O'Brien, aktualisiert more than 1 year ago
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Erstellt von Lily O'Brien
vor mehr als 7 Jahre
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Frage 1
Frage
The number of protons equals
Antworten
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The number of electrons
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The number of neutrons
Frage 2
Frage
Limestone is mainly
Antworten
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Sodium carbonate
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Calcium carbonate
-
Magnesium carbonate
Frage 3
Frage
Metals are:
Choose 3
Antworten
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Good conductors of electricity
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Colourful when molten
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Strong
-
Good conductors of heat
Frage 4
Frage
Alloys are softer than pure metals
Antworten
- True
- False
Frage 5
Frage
Crude oil is mainly made up of hydrocarbon molecules
Antworten
- True
- False
Frage 6
Frage
Sulphur dioxide causes acid rain
Antworten
- True
- False
Frage 7
Frage
Cracking means splitting up long- chain hydrocarbons
Antworten
- True
- False
Frage 8
Frage
Polymers are:
Choose 3
Antworten
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Cheap
-
Expensive
-
Most aren't biodegradable
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Biodegradable
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Most don't rot
Frage 9
Frage
Choose every right answer about vegetable oils (3)
Antworten
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Have benefits for cooking
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Used in detergents
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Used to produce fuels
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Used in food
Frage 10
Frage
Unsaturated oils contain double bonds
Antworten
- True
- False
Frage 11
Frage
Hydrophilic ends of an emulsifier latch onto oil molecules
Antworten
- True
- False
Frage 12
Frage
Why wasn't Wegner's theory of continental drift accepted for many years? Choose 2
Antworten
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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
Frage 13
Frage
The centre of the Earth is mainly made of iron and nickel
Antworten
- True
- False
Frage 14
Frage
The early atmosphere was mainly
Antworten
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methane
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oxygen
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carbon dioxide
-
nitrogen
Frage 15
Frage
Ethanol can be produced from plant materials
Antworten
- True
- False
Frage 16
Frage
Biodiesel can be produced from vegetable oils
Antworten
- True
- False
Frage 17
Frage
The mass number is the total number of protons and electrons
Antworten
- True
- False
Frage 18
Frage
The atomic number tells you the number of protons or electrons
Antworten
- True
- False
Frage 19
Frage
Emulsifiers stop emulsions from seperating out and this gives them a longer shelf life. They allow food companies to produce food lower in fat
Antworten
- True
- False
Frage 20
Frage
No one is known to be allergic to emulsifiers so they can be very useful
Antworten
- True
- False
Frage 21
Frage
Convection currents in the mantle cause plates to drift
Antworten
- True
- False
Frage 22
Frage
The oceans formed when the water vapour condensed
Antworten
- True
- False
Frage 23
Frage
the oceans are a natural store of carbon dioxide, however the amount of CO2 we're releasing is making them too acidic
Antworten
- True
- False
Frage 24
Frage
Polymers are:
Choose 2
Antworten
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Very durable
-
Now mostly having waterproof coating
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Very strong
-
Light,stretchable
Frage 25
Frage
Saturated fats are healthier than unsaturated fats
Antworten
- True
- False
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