Unit 2 Module 1 Lesson 2 Functional Groups and types of formulae
Naming compounds with functional groups
Learning outcomes
 Understand and use the IUPAC rules of nomenclature for naming compounds with
functional groups.
 Understand and use the following terms: empirical formula; molecular formula;
general formula; displayed formula.
 Understand and use the term structural formula.
 Understand and use the term skeletal formula.
Starter
1.
Name the following organic compounds:
a)
b)
2. Name the following organic compounds:
3.
a)
b)
3. Draw displayed formula for the following compounds:
a)
b)
c)
d)
1-chlorobutan-1-ol
2-methylbutan-1-ol
2-bromopentane
2-bromo-3-chloropentane
c)
Unit 2 Module 1 Lesson 2 Functional Groups and types of formulae
4. Name the following organic compounds:
a)
b)
5. Draw the displayed formula for the following compounds:
a) 5-bromopent-2-ene
b) 2,7,8-trimethyldecane
Alternative ways of displaying the formula of hydrocarbons. Use the book to find the
definitions.
Empirical formula -
Molecular formula -
General formula –
Can you work out why the algebraic formula for the alkanes is CnH2n+2?
Can you work out the general formula for the alkenes and the alcohols?
Displayed formula – this is the one you are probably most used to
Unit 2 Module 1 Lesson 2 Functional Groups and types of formulae
Structural formula
Skeletal formula
Complete the questions on page 109, 111 and 113
Homework
Name
Molecular
formula
Butane
C4H10
1
2
4-methyl
nonane
3
Cyclo
hexene
4
5
Structural Formula
Displayed Formula
Skeletal Formula
Unit 2 Module 1 Lesson 2 Functional Groups and types of formulae
6
2-methyl
hex-1-ene
7
2,3 dimethylbut
ane
8
CH3CHCHCH2CH2
CH3
9
10
Name
11
12
Molecular
formula
Structural Formula
Displayed Formula
Skeletal Formula
Unit 2 Module 1 Lesson 2 Functional Groups and types of formulae
13
14
15
16
Butanone
17
1,1,3trichloroprop
ane
18
Ethane-1,2diol
19
2-bromo-1chloro-3iodo-2methylbutan
e
Unit 2 Module 1 Lesson 2 Functional Groups and types of formulae