Why is a flame always orange?

The flame color is directly influenced by the chemicals being burned in its path or directly added, mixed with the source(if gaseous) or the material itself being burned off.

copper is like green/blue color. somewhat like that patina color it gives when it is old and weathered.

if you search for a spectrometer, you'll find out more about what material gives off what color when burned up.

some materials will not combust at lower temps so the color will be that of those chemicals with a lower burning temp. in the same sense a higher temp flame will be able to burn away different chemicals which will give away a different a color when being burned off. I guess that is how the whole color intensity identification thing works, not sure though.

gl

btw search for "Spectroscopes" that will help a lot.

A Flame isn't always orange it is most commonly seen of all the colors but flames can be blue, purple, green, white and many others but I personally don't know why a flame is orange.

The color of a flame is directly affected by the intensity of its heat. Blue flames seem to represent the highest heat intensity and lowering of the heat as it turns into red and orange

A combination of the temperture of the flame, and what's burning.

I think, It is due to the Presence of Carbon di oxide.

i honestly don't know but it will probably a reaction when it is being lit. for example if you put chemicals into a fire it changes

why is the sky blue? why is the grass green? who knows!