Other questions in this quiz

2. Silver nanoparticles are used in socks to prevent bad smells. Suggest why the manufacturers used nanoparticles instead of regular silver particles.

  • They are more effective and cheaper.
  • They are better looking and more effective.
  • They keep the socks intact for longer.

3. Why do ionic compounds need to be molten or in solution to conduct electricity?

  • The ions cannot move in the solid, but become free to move in the molten liquid/ solution.
  • The ions cannot move in a Liquid, but become free in to move in solid.

4. Why are compounds such as methane and ammonia, gases at room temperature?

  • They are made of small molecules
  • They are large molecules

5. Silver nanoparticles are used in socks to prevent bad smells. How are silver nanoparticles different to regular silver particles?

  • They are very small and have a greater surface area.
  • They are very large and have a greater surface area.
  • They are very small and have a smaller surface area.

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