Pyro-Chemical Question

Off Topic
#1

I know many of yous can tell what sort of chemicals are being burned by the color of a flame/flare so maybe you can answer this:

On a propane stove the flame is normally a pure blue flame, but if one drips a tiny bit of water (or steam) near the flame it will turn to a yellow-orange flame.

Is something in the propane catalyzing with the water (or visa versa) to crack off different flamable gases?

Thanks

#2

I’m no expert but I was under the impression that white-yellow is hydrogen content.

A propane flame can also be yellow when it’s too rich. The steam may be displacing some of the oxygen that the propane needs.