Other questions in this quiz

2. one property of a smart polymer that is different to that of an ordinary polymer

  • it remembers its shape
  • has a double bond
  • it is soft

3. why is the extraction of copper expensive?

  • takes a lots of time
  • its a batch process
  • many steps are involved
  • copper is very reactive

4. name two sub-atomic particles in the nucleus of an atom

  • neutron and electron
  • neutron and proton
  • proton and electron

5. why are vegatable oils important fuels and food?

  • they provide energy
  • they cook foods faster

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