1. Chapter 5: Electrons in Atoms
Section 3: Physics and the Quantum Mechanical Model

2. Light Quantum Mechanical Model- came from study of ______________.
Sir Isaac Newton ( ) – believed light consists of ______________.
By evidence to show that light is made of _______________.

3. Light Wavelength:… Amplitude:…
Symbolized by the greek letter __________.
Wavelength has units of_________.
Amplitude:…

4. Light
Frequency: ….
symbolized the greek letter ___________.
Frequency has units of ______________.
*For waves traveling at the same velocity, the longer the ______________, the smaller the _______________.

5. Light = c/λ or c = λ λ= v= c= (constant for the speed of light)
*Note: the units for wavelength and the speed of light must be the same!!!

6. Light
All electromagnetic radiation waves that travels at the same velocity:____________

7. Light Visible Spectrum Red – __________ wavelength
Violet – __________ wavelength
Order of Spectrum- ______________

8. Atomic Spectra Atoms gain energy… Atoms lose energy…
The light emitted by an atom consists of only certain _____________, not all visible frequencies that __________ emits
The ____________ of light emitted are different for each element; elements’ “_______________”.

10. Explanation of Atomic Spectra
Ground State…
As an electron absorbs energy…
When the electron returns to its ground state…