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).
Because the yellow flame produces less heat energy than the blue flame, and if you use the yellow flame, more chemical energy in the gas will be transferred into light energy â¦ than heat energy, which would be a waste of energy.(Cause your goal is the heat up the beaker.). 3 people found this useful. Answered.