Midterm 2 Flashcards
1
Q
kinetic molecular theory of gases
A
understanding pressure and temperature on molecular level
2
Q
visible light from an electron
A
electromagnetic radiation
3
Q
Photoelectric effect
A
emission of e- from metallic surface on which light shines
4
Q
A quantum
A
smallest amount of E which can be emitted or absorbed as electromagnetic radiation
5
Q
Photoelectric effect and Photons
A
proof of particle nature of light & quantization
6
Q
photon
A
light traveling in “energy packet”
7
Q
radiation on one wavelength
A
monochromatic
8
Q
radiation spanning wide variety of wavelengths
A
Continuous
9
Q
spectrum from a gas has only one wavelength
A
line spectrum
10
Q
Bohrs Model
A
3 postulates
11
Q
lowest energy state
A
ground state
excited state = @ higher E level
12
Q
matter waves
A
- apply to e-
- apply to low mass high speed objects
- used for x-ray and electron microscopy
