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Flashcards in 1.5 Products from oil Deck (28)
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What is the process of which all of the products are separated from crude oil?

Factional Distillation

1

What is the structure in which fractional distillation occurs in?

A fractionating column

2

What are the products of cracking?

Alkanes and alkenes

3

What is the name of the process that breaks down long-chain hydrocarbons into shorter, more useful hydrocarbons?

Cracking

4

What is the general formula for alkenes?

CnH2n

5

What is the catalyst present when reacting ethene with steam to form ethanol?

Phosphoric acid

6

During fermentation, sugar is converted into what?

Ethanol and carbon dioxide

7

What is polymerisation?

When many small alkene molecules (monomers) join together to form polymers

8

Plastics are an example of what kind of polymers?

Synthetic polymers

9

What is added to a plastic bag to make it biodegradable?

Cornstarch

10

Are polymers saturated with single bonds or unsaturated with double bonds?

Saturated with single bonds.

11

Many polymers are not biodegradable, what does this mean?

That they are not broken down by microbes

12

What are many polymers made from?

Fossil fuels

13

What is the molecular formula for Ethanol?

C2H5OH (small numbers)

14

Why is Ethanol not a hydrocarbon?

Because it contains oxygen as well as hydrogen and carbon

15

Which two ways can you make Ethanol?

Fermentation of a sugar solution and the reaction of ethene with steam

16

What is a continuous process?

This means that reactants are constantly being put in at one end of the reaction vessel and products are constantly being taken out at the other end of the reaction vessel

17

What is a batch process?

This means the reaction vessel must be emptied and cleaned when the reaction is complete and then refilled with a new batch

18

What is the name of the process when seeds are crushed and then the crushed material is squeezed to form oil?

Pressing

19

How can oil that has been extracted by distillation be refined (made purer)?

By removing water and other impurities

20

An example of one fossil fuel?

Coal or Oil or Natural Gas

21

Where do Biodiesels come from?

Plants which have had their oil extracted

22

Why do chemist crack oil?

To get the more useful materials out of the oil

23

What is the general formula for alkenes?

CnH2n+2

24

Why is a catalyst used in cracking?

To provide the hydrocarbon gases for a convenient surface for the cracking to take place.

25

Why can polymers be difficult to dispose of?

They do not break down very easily.

26

What is formed when ethene reacts with steam?

Only ethanol

27

How do we know alkenes are unsaturated?

They have double bonds