C6.2 Test Buffer Deck

Question 1

Hydrocarbon

Answer 1

compound that only contains hydrogen and carbon atoms

Question 2

why do alkanes form a homologous series

Answer 2

they have the same general fromula

Question 3

alkane general formula

Answer 3

CnH2n+2

Question 4

complete combutstion products?

Answer 4

CO2 and water

Question 5

why carbon monoxide bad

Answer 5

toxic and causes suffocation

Question 6

why do alkenes form a homologous series

Answer 6

same general formula

Question 7

Why are alkanes saturated

Answer 7

because their carbon atoms are joined by C-C single bonds only

Question 8

alkene general formula

Answer 8

CnH2n

Question 9

why are alkenes unsaturated

Answer 9

bonds arent wholly made up of C-C single bonds

Question 10

what is a functional group

Answer 10

a specific group of atoms in a compound which is responsible for that compounds chemical reactions

Question 11

what is alkene functional group

Answer 11

C=C double bond

Question 12

what type of reaction does the C=C double bond in alkenes allow for

Answer 12

addition reactions

Question 13

example of addition reaction

Answer 13

ethene + bromine -> dibromoethane

Question 14

bromine saturation test

Answer 14

solution turns colourless with alkene due to addition reaction, stays orange-brown when mixed with alkanes

Question 15

alkene addition reaction with hydrogen and nickel catalyst

Answer 15

ethene + hydrogen -> ethane

Question 16

alcohol functional group

Answer 16

hydroxyl, -OH

Question 17

alcohol suffix

Answer 17

‘ol’

Question 18

alcohol general formula

Answer 18

CnH2n+1OH

Question 19

complete combustion of an alcohol

Answer 19

ethanol + oxygen -> carbon dioxide + water

Question 20

what can you do with the hydroxyl functional group

Answer 20

oxidise to form carboxylic acid

Question 21

carboxylic acid functional group

Answer 21

carboxyl, -COOH

Question 22

carboxylic acid suffix

Answer 22

‘anoic acid’

Question 23

how can a carboxyilic acid be formed

Answer 23

when an alcohol reacts with oxidising agent such as potassium manganate solution

Question 24

how can ethanol be oxidised to ethanoic acid

Answer 24

add acidified potassium manganate solution to a test tube of ethanol and warm in a water bath. colour change from purple to very pale pink

Question 25

carboxylic acid reacts with metals to form

Answer 25

salts and hyddrogen

Question 26

carboxylic acid reacts with alkalis or bases to form

Answer 26

salts and water

Question 27

carboxylic acid reacts with carbonates to form

Answer 27

salts, water and carbon dioxide

Question 28

suffix for salt formed in carboxylic acid reaction

Answer 28

'oate' like ethanoate

Question 29

crude oil is formed from

Answer 29

the remains of marine organisms that lived millions of years ago

Question 30

crude oil is a

Answer 30

fossil fuel, finite resource

Question 31

why is crude oil non-renewable

Answer 31

it is being used up quicker than it is being formed

Question 32

what is crude oil made up of

Answer 32

complex mixture of hydrocarbons, mostly alkanes

Question 33

the more carbon atoms there are in alkane molecules...

Answer 33

larger the molecules, stronger the intermolecular forces, higher the boiling point