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