Brainscape's Knowledge GenomeTM

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


See full index

GCSE AQA Chemistry > C10 - Alkenes > Flashcards

C10 - Alkenes Flashcards

You may prefer our related Brainscape-certified flashcards:
GCSE Geography - AQA flashcards AP® Chemistry flashcards GCSE Religious Studies - Edexcel Route B flashcards GCSE Religious Studies - Eduqas Route A flashcards GCSE Religious Studies - Edexcel Route A flashcards GCSE Religious Studies - Eduqas Route B flashcards Periodic Table flashcards Chemistry 101 flashcards Organic Chemistry 101 flashcards
1
Q

organic molecules

A

all contain carbon atoms

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

alkene

A

carbon, carbon double bond
-more reactive that alkane

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

functional group

A

gives a family of organic compounds their characteristic reactions

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

homologous series

A

family of organic compounds with the same functional group

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

formula for alkene

A

CnH2n

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

Alkene combustion features

A

-burns incomplete combustion (smokier yellow flame)
-releases less energy per mole

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

Which hydrocarbon is used as fuel and why

A

-alkanes
-burns with a cleaner flame

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

complete combustion

A

ethene + o2 —> co2 and water

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

Addition reaction of alkene

A

Carbon carbon double bond opens up and adds another pair of atoms

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

why are alkenes unsaturated

A

do not contain max number of hydrogens

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

by addition of hydrogen to an alkene what is made

A

alkane

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

why is addition of hydrogen used

A

-to straighten unsaturated oil molecules
- increase melting point

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

formation of alcohol

A

alkene + steam

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

alcohol functional group

A

-OH

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

Carboxylic acid - functional group

A

contains -COOH functional group

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

Esters functional group

A

-COO-

17
Q

ethanol use

A

-alcoholic drinks
-biofuel
perfume
-mouthwash

18
Q

how is ethanol made

A

fermenting sugars with yeast
or
hydration of ethene

19
Q

ethanol flame

A

clean blue flame

20
Q

alcohol and sodium reaction

A

-fizz (H2 gas)
-not as vigorous as sodium and water

21
Q

sodium alkoxide in water gives you

A

strong alkaline solution

22
Q

formation of carboxylic acid

A

oxidation of alcohol
ethanol + oxygen atoms from oxidising agent

23
Q

How can alcohol being exposed form a carboxylic acid

A

microbes produce it as they react

24
Q

carboxylic acid and metal carbonate

A

salt + water + co2

-co2 is given off slowly

25
Q

what type of acids are carboxylic acids

A

weak acids

26
Q

carboxylic acids in water

A

-dissolves
-ionises but not very well

27
Q

making esters

A

carboxylic acid and alcohol

28
Q

esters features

A

-volatile (evaporate easily)
-make sweet smells

29
Q

ester use

A

(used in perfume or food flavourings)

30
Q

Formula for carboxylic acid

A

CnH2n+1. COOH
(where n is the number of carbon atoms in the molecule, minus 1).

GCSE AQA Chemistry (36 decks)

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