History of the Atom
Rutherford's gold foil experiment discovered this part of the atom
What is the nucleus?
The direction an excited electron moves when it returns to its original state
What is towards the nucleus?
The original state or energy level that an electron occupies
What is the ground state?
The maximum number of energy levels or shells in an atom
What is 7?
Evidence that electrons jump energy levels, like a fingerprint for an element
What is a bright-line spectrum?
Bohr's proposed improvement of Rutherford's model
What are energy levels or "orbits"?
The direction an electron moves when it becomes excited
What is away from the nucleus?
The result of the absorption of heat or electricity by an atom
What is an excited electron?
What is 2?
The equation to calculate frequency or wavelength of light
What is speed of light (c) = wavelength times frequency ?
Thomson's model of the atom which Rutherford revised
What is the plum pudding model?
In order for an electron to jump to a higher energy level, this must happen
What is energy must be ABSORBED ?
The direction that electrons fill the energy levels
What is from the inside out (near the nucleus first)?
The maximum number of electrons that can fit into shell number 2
What is 8?
Planck's equation to calculate energy of a photon
What is E = hf?
Rutherford shot these at gold foil to see if they went through
What are alpha particles?
In order for an electron to return to the ground state, this must happen
What is energy is RELEASED?
The reason that electrons give off light and return to their original level
What is nature likes to find balance/stability?
The maximum number of electrons that can fit into shell number 3
What is 18?
The way an excited electron returns to the ground state
What is releases energy in the form of light?
The equipment Thomson used to discover the electron
What is a cathode ray tube?
What are distance from the nucleus and shape of the orbital pathway?
If 1.6 x 10^-18 J of energy must be absorbed for an electron to jump from the 1st electron shell to the 2nd electron shell, this amount of energy will be released when it moves back.
What is 1.6 x 10^-18 J?
The maximum number of electrons that can fit into shell numbers 4,5,6, & 7
What is 32?
What is violet?