alkenes

Question 1

what is an alkene

Answer 1

-unsaturated hydrocarbons meaning they contain a carbon-cabron bond

Question 2

what is a double carbon bond

Answer 2

area of high electron density making it susceptible to attack from electrophiles.
normal covalent bond and pi bond

Question 3

what identifies the double carbon bond

Answer 3

bromine water
brown to colourless

Question 4

alkenes undergo

Answer 4

electrophillic addition about the double bond

Question 5

electrophiles + examples

Answer 5

Hbr
br2
h2so4
electron acceptors are attracted to areas of high electron density

Question 6

carbo cations in electrophillic addition

Answer 6

how electrophiles attack double bond bond breaks carbocation forms and its an atom with only 3 bonds so pos charge

Question 7

how addition polymers produced

Answer 7

alkenes where the double bond is broken to form a repeating unit

Question 8

reaction conditions to produce polymer chains

Answer 8

high pressures to produce branched chains which have weak imf
lower pressures and temps produce straigh chain polymers with strong imf

Question 9

uses of polymers

Answer 9

multiple strong ,non polar covalent bonds -shopping bags - polyethene
not biodegradable and cannot be broken down by species in nature

Question 10

pvc

Answer 10

polychloroethene
addition polymer with waterprood properties
gains these properties by the addition of plasticicers during the reaction