GCSE Chemistry, 4.7- Organic chemistry.

State how many carbon atom in each alkane.

a) Ethane.

b) Butane.

c) Propane.

d) Methane

a) 2

b) 4

c) 3

d) 1

Describe 3 change of properties as increasing size of hydrocarbon. [3 marks]

More vicious, less flammable, lower boiling point

What is the condition of hydrogenation. [2 marks]

150 ^oC and nickel catalyst.

Suggest 2 ways to make ethanol. [4 marks]

• React ethene with water.

• 300 ^oC, 70 atm and phosphoric acid catalyst.

• Fermentation.

• 30 ^oC and yeast.

State the product when methanol react with oxidising agent. [2 marks]

Methanoic acid and water

State the product when ethanol react sodium. [2 marks]

Sodium ethoxide and hydrogen.

Balance the equation. [4 marks]

C₂H₅OH + O₂ → __________ + __________

C₂H₅OH + 3O₂ → 2CO₂ + 3H₂O

What is the 2 functional group of amino acid.

[2 marks]

Amine group and carboxylic acid group.

What is the monomer of protein, [1 mark]

Amino acid.

What is the monomer of DNA. [1 mark]

Nucleotides.

What is the 2 monomer of glucose. [2 marks]

Starch and cellulose.

What is the product when ethanoic acid mix with ethanol. [2 marks]

Ethyl ethanoate and water.

By assuming there are n monomer of ethane diol and hexanedioic acid.

Use X represent diol or dioic.

n HO-X-OH + n COOH-X-HOOC →__________

Draw the repeating unit for condensation polymer.

[3 marks]