hey can anyone explain line emission sprectras?! im trying to revise!!
From what I can remember, the explanation you need in AS chemistry is something like; 'when you heat up atoms the electrons orbiting the atom become excited and promote themselves to 'higher energy states', they are not stable in this position and so return to their original state after a while, when they do this they emmit photons/light waves of specific frequencies/wavelengths producing a trademark spectrum of specific 'lines'/frequencies for different elements/compounds.'
yea I know theres more to it than this before anyone starts correcting my generalisations, but I'm trying to write it as an AS style answer, hope it's helped.