Chapter 8 Flashcards
(23 cards)
all electromagnetic waves go at the…
speed of light
amplitude
how bright/intense electromagnetic radiation is (height of wave)
Wavelength determines the ____ of light
color
wavelgth determines…
frequency
as frequency increases…
wavelength decreases
What happens when two waves collide?
interference
What are the two types of interference?
constructive and destructive
constructive interference
When two waves travel in the same direction and are in phase with each other, their amplitude gets added together
destructive interference
when two waves traveling in the same direction are aligned at the crest of one wave and the trough of the other. The waves cancel out
Diffraction
the bending or spreading of waves as they pass through a narrow opening or around an object’s edge
Photoelectric Effect (Einstein)
when sufficiently energetic light shines on a metal surface, it emits electrons
in the photoelectric effect, a larger amplitude =
more energy in electrons
what does the photoelectric effect prove?
that light is a particle
light has _______ characteristics
particle and wave characteristics
the energy of an electron is dependent on…
how far that electron is from the atom’s nucleus
electrons absorb light…
only at certain frequencies
What are the problems with the Bohr Model?
only works with 1 electron and predicts and uses circular orbits, which is wrong
orbital
distributions of where we might find electrons with a certain energy and/or angular momentum
atomic orbital theory captures wave-particle duality because…
calculations use wave functions
in atomic orbital theory, energy is…
quantized (discrete)
pauli exclusion principle
no two electrons in an atom can have some set of quantum numbers
curly l
angular momentum quantum number that describes the shape of an orbital, can be 0….n-1, each value has a specific shape
magnetic quantum number
defines how orbital is oriented in space
