Other questions in this quiz

2. the boiling points and densities of the noble gasses increase as you move

  • dwn the group
  • down the group
  • dowwwn the group
  • up the group

3. Helium is used in airships and party balloons, why?

  • has a lower density than air- makes the ballon float
  • same density as air so makes it float
  • lower density than oxygen which makes it flow
  • higher density than air- makes it float

4. argon can be used to protect metals that are being welded. why?

  • the inhert atmospher stops the hot metal reacting with oxygen
  • lighter than helium
  • the inhert atmospher stops the ho meatal reacting with oxygen

5. Group 0 element are all inhert gasses, what does this mean?

  • they are dull
  • dont react with much
  • they have two mnay electrons
  • they react miledly


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