Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Chemistry Paper 2 > C9:CrudeOilAndFuels > Flashcards

C9:CrudeOilAndFuels Flashcards

You may prefer our related Brainscape-certified flashcards:
Periodic Table flashcards Chemistry 101 flashcards AP® Chemistry flashcards Organic Chemistry 101 flashcards
1
Q

what is crude oil a mixture of

A

many different compounds

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

what are the compounds in crude oil called

A

hydrocarbons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

what atoms do hydrocarbons contain

A

hydrogen and carbon

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

what type of hydrocarbons are alkanes

A

saturated

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

what does a saturated hydrocarbon mean

A

that they contain as many hydrogen atoms as possible in their molecules

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

the general formula of an alkane

A

CnH2n+2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

how is crude oil separated

A

fractional distillation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

what do the properties of each fraction depend on

A

the size of the molecules in it

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

what type of fraction makes better fuels

A

lighter fractions

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

why do lighter fractions make better fuels

A

ignite more easily, burn well, burn with cleaner flame

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

what happens when hydrocarbons are burned in plenty of air/oxygen

A

carbon and hydrogen are completely oxidised

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

products of complete combustion

A

carbon dioxide and water

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

carbon dioxide test

A

carbon dioxide turns limewater cloudy

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

water test

A

water turns blue cobalt chloride paper pink/ white anhydrous copper sulfate blue

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

product of incomplete combustion

A

carbon monoxide

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

how can large hydrocarbon molecules be broken into smaller molecules

A

by passing vapours over a hot catalyst or by mixing them with steam and heating them to a very high temperature

17
Q

what does cracking produce

A

saturated hydrocarbons and unsaturated hydrocarbons

18
Q

what are saturated hydrocarbons used for

A

fuels

19
Q

what are unsaturated hydrocarbons called

A

alkenes

20
Q

what type of bonds do alkanes have

A

single covalent bonds

21
Q

whay type of bonds do alkenes have

A

carbon to carbon double bonds

22
Q

alkene test

A

alkenes react with orange bromine water, turning it colourless

Chemistry Paper 2 (9 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions