Other questions in this quiz

2. 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

3. why is argon used in flimaent lamps?

  • hhfjjdenejn
  • because it provide a inert atmosphere
  • stops hot flimaent buring away (non flmabale)
  • its poo

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

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

5. 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


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