C1.5 Other useful substances from crude oil Flashcards

1
Q

What is the process of cracking?

A

Heating hydrocarbons to vaporise them
The vapours are either passed over a hot catalyst or mixed with steam and heated to a very high temperature so that thermal decomposition reactions then occur

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2
Q

What are the products of cracking?

A

Unsaturated hydrocarbons called alkenes

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3
Q

Name some alkenes (2)

A

Ethene

Propene

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4
Q

What does this = mean in a displayed structure?

A

It has a double bond

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5
Q

What can alkenes be used to make?

A

Polymers

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6
Q

What are polymers used for?

A
  • New packaging materials
  • Waterproof coatings for fabrics
  • Dental polymers, wound dressings
  • Hydrogels, smart materials (including shape memory polymers).
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7
Q

What is another process for making ethanol?

A

fermentation with yeast

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