Other questions in this quiz

2. why is rust a problem

  • because it makes it soggy and wet
  • because it replaces the steel with iron oxides which makes it weaker
  • because it makes it too shiny
  • because it makes it reactive therefore it must be replaced

3. why is copper used for pipes

  • because copper looks pretty
  • because copper is strong
  • because copper is very unreactive
  • because copper rusts

4. how much of the periodic table is metal

  • 75%
  • 25%
  • 30%
  • 90%

5. metal + steam

  • metal dioxide
  • metal hydroxide + hydrogen
  • metal oxide + hydrogen
  • metal oxide

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