4.1.3 Alkenes

Question 1

unsaturated definition

Answer 1

at least 1 carbon to carbon double or triple bond

Question 2

hydrocarbon definition

Answer 2

compound containing hydrogen and carbon only

Question 3

general formulae of alkene

Answer 3

CnH2n+2

Question 4

how to obtain an alkene

Answer 4

cracking long chained alkanes present in crude oil

Question 5

How to name an alkene

Answer 5

count longest carbo chain
identify position of double bond
use lowest number
name any alkyl groups

Question 6

Structural isomer

Answer 6

compound with the same molecular formulae but different structural formulae

Question 7

electrophile

Answer 7

species that accepts a pair of electrons

Question 8

what charge does an electrophile have

Answer 8

positive

Question 9

what electrons are most likely to be attracted by the electrophile

Answer 9

the electrons on the Pi bond

Question 10

how to do addition polymerisation

Answer 10

remove double bond and extend the end lines

Question 11

how to join many alkenes

Answer 11

break the pi bond

Question 12

Sterioisomers

Answer 12

same structural and molecular formulae but different arrangement of atoms in space

Question 13

conditions for E/Z isomers

Answer 13

a c=c double bond
different groups attached to each carbon atom of the double bond

Question 14

z isomer

Answer 14

on the same side

Question 15

e isomer

Answer 15

on different side

Question 16

cis isomer

Answer 16

same atoms on the same side of the molecule

Question 17

trans isomer

Answer 17

same atoms diagonally opposite each other