Question

help! how can you tell when water is in gas state instead of a liquid state during a chemical reaction??

Answer 1

Hmmm. Do you have the equation? It should be noted in the equation as aq. for liquid.

Answer 2

You can also look at the energy levels, water as a gas is higher energy.
Are you keeping track of temperature in this experiment?

Answer 3

@wolfe8 is right, look at the phase of the water in the reaction, if you have it