[scientific]

What needs to be considered when balancing oxidation-reduction reactions that does not need to be accounted for when balancing a standard formation reaction, such as 2H₂ _ O₂  2H₂O?

I'm not sure how these are related, but I'm assuming that the "thing to be considered" is charge?

[Borek]

I'm not sure how these are related, but I'm assuming that the "thing to be considered" is charge?

Sounds good.

Balancing the reaction equation is just another application of mass conservation (mass - in this case atoms - are not created nor destroyed).

Charge is conserved as well. Just when dealing with neutral compounds it is conserved always automatically (not necessarily when dealing with net ionic reactions though).