Other questions in this quiz

2. During fractional distillation...

  • hydrocarbons are chemically separated into smaller hydrocarbons
  • substances with high boiling points condense at the bottom and substances with lower boiling points condense at the top
  • crude oil stays as crude oil
  • substances with low boiling points condense at the bottom and substances with high boiling points condense at the top

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

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

4. What is cracking?

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

5. Small hydrocarbons...

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

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