Section 7 - Organic Molecules

Question 1

What are homologous series?

Answer 1

Groups which have similar properties and react in similar ways

Question 2

All the compounds in a homologous series contain the same ____________ _______

Answer 2

functional group

Question 3

What is a functional group?

Answer 3

A certain group of atoms that is responsible for the properties of the molecule

Question 4

What are alkanes’ functional group?

Answer 4

-C-C-

Question 5

What are alkenes’ functional group?

Answer 5

-C=C-

Question 6

What are alcohols’ functional group?

Answer 6

-OH

Question 7

What are carboxylic acids’ functional group?

Answer 7

-COOH

Question 8

What are the 5 different formulas that are used to represent an organic molecule’s formula?

Answer 8

• General formula
• Molecular formula
• Displayed formula
• Structural formula
• Skeletal formula

Question 9

What does general formula show you?

Answer 9

This describes any member in a homologous series. The number of carbons is represented by ‘n’ and the number of hydrogens in terms of ‘2n+1’.

Question 10

What does molecular formula show you?

Answer 10

This shows the number of atoms of each element in a molecule

Question 11

What does displayed formula show you?

Answer 11

All the atoms and bonds are drawn to show how the molecule is arranged

Question 12

What does structural formula show you?

Answer 12

This shows the molecule carbon by carbon with all attached hydrogens and functional groups

Question 13

What does skeletal formula show you?

Answer 13

The bonds of the carbon skeleton are drawn, with any functional groups. The carbon atoms and attached hydrogens aren’t shown.