Other questions in this quiz

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

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

3. why is there no overall charge on an atom?

  • number of protons is equal to number of electrons
  • number of protons is equal to the number of neutrons
  • mass number can be divided by two

4. why is the extraction of copper expensive?

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

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

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

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