Rachel is a 35 year old school teacher who has no man in her life and lives with her mother.
Each element give off a particular color when heated in a flame. (Some are colorless). Copper gives off a green flame but to do that there must be some copper compound IN the flame. (there are many other elements that also could be causing a green flame).
Hot objects glow and give off light, just as the coils of a toaster glow red, or the wood and coals of a fire give off light. The colors of a flame actually indicate the local temperature of the gases. At temperatures above 1000 oF objects will glow and give off visible light that we call incandescent. This thermal radiation has only a small portion in the visible (about 5% for a fire) while most of the rest is infrared radiation. You can feel infrared radiation as the heat from a fire. Thermal radiation is the name for electromagnetic radiation emitted by the huge numbers of electrons in hot objects and as such, if the wavelengths of the light are examined, there is a continuous distribution of all wavelengths or frequencies present.