Organic Chemistry

Question 1

What is meant by the term hydrocarbon?

Answer 1

A compound that contains only hydrogen and carbon

Question 2

What is meant by the term Homologous series?

Answer 2

A series or family of organic compounds that have similar properties or chemical properties

Question 3

What is meant by the term isomer?

Answer 3

Isomers are the compounds that have the same molecular formula but different displayed formulae

Question 4

How do you represent organic molecules using empirical formulae?

Answer 4

Using the simplest number ratio e.g
Hydrogen peroixde is H2O2 but is represented as HO

Question 5

How do you represent organic molecules using Molecular formulae?

Answer 5

The molecular formula shows the actual number of atoms in a molecule
E.g Butane is written as C4H10

Question 6

How do you represent organic molecules using General formulae?

Answer 6

General formulae shows the general number ratio of atoms using (n) e.g
Cn+H2n+2

Question 7

How do you represent organic molecules using Displayed formulae

Answer 7

Shows the spatial arrangement of all the atoms and bonds in a molecule

Question 8

How do you represent organic molecules using Structural Formulae

Answer 8

in a structural formulae enough information is shown to make the structure clear, but most of the actual covalent bonds are omitted
e.g pentane is written instead of C5H12 but as CH3 (CH2)3CH3

Question 9

How can you remeber the 6 Hydrocarbons using the suffix?

Answer 9

Meth = 1
Eth = 2
Prop = 3
But = 4
Pent = 5
Hex = 6

Question 10

What is meant by an addition reaction?

Answer 10

It takes place when 2 or more molecules combine to form a larger molecule with no other products
E.G: C2H4 +Br2 = C2H4Br2

Question 11

What is meant by the term substitution reaction?

Answer 11

It takes place when a more reactive functional group replaces another
E.G: Ch4 + Br2 = CH3Br +HBr