would a subtance or chemical react differantly on a differant planet then on the earth?

Question: would a subtance or chemical react differantly on a differant planet then on the earth?
- Keywords:
  chemical,
  earth,
  planet,
  reaction
Asked by liamster6000 to Katherine, Hugh, Matt on 11 Nov 2017.
- Hugh J. Byrne answered on 11 Nov 2017:
  
  In the atmosphere, reactions mostly depend on oxygen, and so long as it is present in about the same quantity, the reaction should be the same.
- Katherine Benson answered on 11 Nov 2017:
  
  Yes, if the reaction requires chemicals present in our atmosphere like oxygen which aren’t on the other planet, then the reaction will be different there. For example, you can’t have fire without oxygen!

Question: would a subtance or chemical react differantly on a differant planet then on the earth?