alkenes

Question 1

are they a class of hydrocarbons

Answer 1

yes

Question 2

what is their general formula

Answer 2

CnH2n

Question 3

are they saturated or unsaturated hydrocarbons

Answer 3

unsaturated

Question 4

define an unsaturated hydrocarbon

Answer 4

the carbon atoms are not bonded to the maximum amount of hydrogen atoms possible and a C=C bond is present

Question 5

list all the alkenes up to decene

Answer 5

methene hexene
ethene heptene
propene octene
butene nonene
pentene decene

Question 6

draw the structural formula of dec-5-ene

Question 7

draw the shortened structural formula of dec-5-ene

Question 8

draw the skeletal formula of dec-5-ene

Question 9

do all alkenes have straight chains

Answer 9

no, they can be branched

Question 10

draw the branched structural formula of but-2-ene

Question 11

what group does 2-methylprop-1-ene have

Answer 11

an alkyl group

Question 12

Whats the general formula of an alkyl group

Answer 12

CnH2n+1

Question 13

what does the 1 in 2-methylprop-1-ene represent

Answer 13

which carbon the double bond is on

Question 14

name all the alkyl groups up to decyl

Answer 14

methyl hexyl
ethyl heptyl
propyl octyl
butyl nonyl
pentyl decyl

Question 15

what type of reactions do alkenes take part in

Answer 15

addition reactions

Question 16

what allows them to do this

Answer 16

reactants can add across the double bond, breaking the Pi bond but leaving the sigma bond intact