by 
Axe
ANSWERS: 2
-
Different elements give off different colors when burned. If the fire changes color it is because a particular element is being burned. Its called the flame test. Lithium is red, coppers are blue or green. This is due to the electrons gaining energy and being excited to higher energy levels then falling (relaxing) back to the ground state by emitting the particular energy that it takes to get from the excited state level back down. It just so happens that in some cases the energy release corresponds to the visible light region. Just enough energy to be red, green, blue etc. Since wavelength can be related to energy nicely we can know exactly how much energy it has released. http://en.wikipedia.org/wiki/Flame_test
-
not from Wikipedia, ( not that I thought the 1st one was from there.....) heat often determines the colour of flame, the hotter the flame, the bluer the flame, if the flame is yellow, the heat is less intense, the bluer the flame the hotter, LOL, I may be wrong, Im thinking about gas flames here.......
RELATED QUESTIONS
Copyright 2023, Wired Ivy, LLC