Quick quiz on the basics of C1a

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  • Created by: iram_f
  • Created on: 29-05-14 14:07

1. Why do large hydrocarbons have high boiling points?

  • They have longer hydrocarbon chains so more energy is needed to break the chains
  • They just do
  • As there are more weak intermolecular forces between the hydrocarbon molecules that are needed to be broken, more thermal energy is needed to break these forces thus giving it a high boiling point
  • As there are less weak intermolecular forces to break, we can just us a lot of thermal energy to break them
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2. What is cracking?

  • Breaking large hydrocarbons into smaller, more useful hydrocarbons as well as an alkene, which is used for polmerisation
  • Making small hydrocarbons into bigger hydrocarbons
  • Crude oil is separated into different fractions, with a similar number of carbon atoms
  • Burning fuel to make energy

3. Fractional distillation is a...

  • good way to separate things
  • physical change
  • thermal decomposition reaction
  • chemical reaction

4. What is crude oil and natural gas made from?

  • The dead remains of land organisms
  • The old remains of chemicals
  • The dead remains of marine organisms
  • The dead remains of humans

5. Small hydrocarbons...

  • are often liquid
  • have a low boiling point and are gaseous
  • have a high boiling point
  • are always solid


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