The Science of Fireworks at the Franklin Institute









Fill In The Blank Notes


B) Bohr Model of Atom

1:15 Bohr Model

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Early 1900's - Danish scientist Neils Bohr
discovers  the strange behavior of electrons.

This image is in the public domain because its copyright has expired.


Electrons in atoms
are restricted in the energies they
can possess,
give off and absorb.


Bohr Animation




Hypothetical Element X

Excited Electron


Energy of 12 eV

Excited Electron


Energy of 4 eV

Ground State

 Energy of 1 eV




When electron falls back to ground state, what energies
 is it capable of giving off?






8 eV, 3 eV, 11 eV



(the difference between
each possible energy level)



1 eV = 1.6 x 10-19
p. 1 Reference



Each energy transition produces only one photon




Black Box



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