Concept

Demonstrations

Atomic Emission

Atomic emission is the process by which excited electrons in an atom give off or emit energy 

            

            Emission of Light from Gases

            Flame Tests for Ions

 

Atomic Spectra

Atomic spectra are generated from atoms when excited electrons of the atoms return to the ground state and emit the energy difference, usually as light energy of various color

 

 

            Emission of Light From Gases

            Flame Tests for Ions

 

Energy States of Electrons

Electrons of any given atom have varying energies associated with them; electrons closest to the nucleus of the atom are of the lowest energy

 

 

            Emission of Light from Gases

            Flame Tests for Ions

 

Spectra

Spectra are fingerprints of atoms or molecules which may be generated by many different methods and which give information on the structure of matter when interpreted correctly, that is, spectra are used for identification and elucidation of structure

 

 

            Emission of Light from Gases

 

IID.  ATOMIC PHENOMENA