HELP - GCSE SCIENCE EARTH MATERIALS

[mikeman150]

Hi

I'm in desprate need of help, can someone please tell me the meanings of:

• Fractional Distillation of Crude oil.
• Naphtha
• Alkane
• Alkene (not the same as above, if u thought take a closer look lol)
• Polymer
• Monomer
• Polymerisation
• Addition Polymerisation.

Help me plezzzzzzzzzzzz!

[Michael.]

Google is your friend

Edit: Got bored and did em for ya. A thanks would be quite nice :p

Fractional Distillation of Crude oil - The process where oil is heated to different temperatures to extract molecules of the same size
Naphtha - A substance like petrol. Distilled from Crude Oil
Alkane - A chain of hydrocarbons. Diagram:

  H H
  | |
H-C-C-H
  | |
  H H

Alkene - A chain of Hydrocarbons with double bonds making it more unstable than Alkanes. Diagram.

 H    H
  \  /
H-C=C-H
  /  \
 H    H

Polymer - A long molecule made up of a chain of smaller, simpler molecules.
Monomer - A molecule that can combine with others to form a polymer.
Polymerisation - The bonding of two or more monomers to form a polymer.
Addition Polymerisation. - A polymerisation Technique where monomer molecules add onto a growing polymer chain one at a time.