The alkanes

Question 1

methyl group

Answer 1

CH3

Question 2

example

Answer 2

2-methylpentane.

Question 3

WHAT IS a branch?

Answer 3

another group of carbon molecule that doesn’t flow on the straight chain

Question 4

3 steps

Answer 4

1. identify parent chain
2. number chain
3. name parent and substituents ( # each sub, end in ‘yl’ + quantity of substituent)

Question 5

quantifying substituents p

Answer 5

1= no need
2= di
3=tri
4=tetra
5=penta

Question 6

1x methyl group

but (4)
ane ( alkane)
2- methyl (subs)

Answer 6

but (4) FIRST
ane ( alkane) LAST
2- methyl (subs from least pf chain) PREFIX

2-methyl butane

Question 7

2x methyl groups
but
ane
2,2- di methyl

Answer 7

1. but
2. tane
3. 2(one on 2),2( another on two) DI!! METHYL

2,2- dimethyl butane

Question 8

1 (2x substituents)+1 METHYL GROUP

hept
ane
2- methyl
5- ETHYL

Answer 8

Start where carbon lowest.
(E B4 M)
5-ethyl- 2-methyl heptane

Question 9

Many branches

Answer 9

1. find junction
2. choose longest carbon chain
3. count carbons (6=hex)
4. BRANCHGROUP 1= methyl, 2= ethy. + location (3 ethyl)

eg. 3- ethyl hexane

Question 10

many branches and junctions

Answer 10

1. choose centre
2. choose longest chain
3. name substituent via nearest carbon

Question 11

why and ?

Answer 11

single bond