C3

Question 1

what is used to extract metals

Answer 1

carbon

Question 2

if the element is more reactive then carbon what do use

Answer 2

electrolysis

Question 3

if the element is less reactive then carbon what is used

Answer 3

it is extracted by reduction using carbon

Question 4

what is electrolysis

Answer 4

the electric current is passed through and the metal is discharged at the cathode or anode

Question 5

what biological methods can be used to extract metals from ores

Answer 5

phytoextraction, bioleaching and living organisms

Question 6

what is oxidation

Answer 6

the reaction with or addition of oxygen

Question 7

what is reduction

Answer 7

the removal of oxygen

Question 8

what are half equations

Answer 8

they show how electrons are transferred during reactions

Question 9

what does electrolysis mean

Answer 9

splitting up with electricity

Question 10

what is formed in the electrolysis of molten ionic solids

Answer 10

it forms elements

Question 11

what are formed when non-metals are bonded together

Answer 11

covalent bonds

Question 12

do atoms only share electrons in their outer shells

Answer 12

yes

Question 13

different ways to draw covalent bonds

Answer 13

dots and crosses

Question 14

what propitious are covalent substances

Answer 14

simple molecular structures

Question 15

do properties change as the carbon chain gets longer

Answer 15

yes

Question 16

do alkanes have single of double bonds

Answer 16

single

Question 17

first four alkanes

Answer 17

methane, ethane, propane and butane

Question 18

what is the formula for alkanes

Answer 18

Cn H2n+2

Question 19

what is the formula for alkenes

Answer 19

Cn H2n

Question 20

what is fractional distillation

Answer 20

when you heat up the crude oil to different temperatures and this separates the different oils

Question 21

uses of crude oil

Answer 21

fuels, roads, lubricants and polymers

Question 22

is crude oil renewable or will it run out

Answer 22

renewable

Question 23

what is cracking

Answer 23

cracking is splitting up long-chains of hydrocarbons

Question 24

why is cracking used

Answer 24

it is used to take highly supplied oils and crack them to create less supplied oils

Question 25

do alkenes have double or single bonds

Answer 25

they have one double bond

Question 26

what is the formula of alcohols

Answer 26

Cn H2n+1 OH

Question 27

carboxylic acids

Answer 27

they have a COOH on the end

Question 28

what ending do alcohols have on a formula

Answer 28

they have OH on the end