Fossil Fuels Flashcards

1
Q

What is crude oil made of?

A

Compounds (hydrocarbons)

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2
Q

What are some uses of crude oil?

A

Liquefied petroleum gas, chemicals, petrol for vehicles, jet fuel, paraffin for heating and lighting, diesel fuels, oils, waxes, polishes, fuel, bitumen for roofing and roads.

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3
Q

The bigger the hydrocarbon, the…

A

Less easily it flows (more viscous)
Less easily it ignites (more flammable)
Less volatile it is (less likely to vaporise)
Higher the boiling point

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4
Q

Name the stages of separating crude oil.

A

Oil is heated and evaporates.
The vapours are allowed to condense at a range of different temperatures.
Fractions are formed (each containing hydrocarbons with similar numbers of carbon atoms)

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5
Q

Define fuel.

A

A substance that burns giving out energy.

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6
Q

What do hydrocarbons produce when burned?

A

Carbon dioxide and water.

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7
Q

What is coal made from?

A

Vegetation in swamps.

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8
Q

What is oil formed from?

A

Marine plants and animals.

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9
Q

When is natural gas formed?

A

At the same time as coal and oil.

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