The main idea is answer choice A.
I’m in APUSH myself so I know how difficult these things can be. If you want to start a gc with all the APUSH students so we can help each other out...maybe we could get through this together.
Answer:
sorry i cant help im not that good in that sorry
Explanation:
Elements emit colours when heated because electrons in atoms can have only certain allowed energies.Heating an atom excites its electrons and they jump to higher energy levels. When the electrons return to lower energy levels, they emit energy in the form of light. Every element has a different number of electrons and a different set of energy levels. Thus, each element emits its own set of colours. See, for example, mercury and neon above. Those colours are as distinctive to each element as fingerprints are to people.
