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.
Answer:
i would say there was a lot of science fiction in literature because it was a time for space exploration and other scientific discoveries.
Explanation:
Hope This Helps!
Answer:
the teachings of Confucius during 500 BC, has played an important role in forming Chinese character, behavior and way of living. (Eliot 2001; Guo 1995) Its primary purpose is to achieve harmony, the most important social value
Explanation:
