chem test 3 Flashcards
photoelectric effect
scientists shined a light on a piece of metal and then it ejected electrons
scientists concluded that certain lights have different frequencies which means
that light carries energy
Who is planck
a scientist who tried to measure light’s energy
what did scientists do after they put hydrogen in glass tube and what color did it shine?
they electrified it and it shone pink
what’d they do to the pink light?
they put it through a prism
what colors did they get from putting the pink light through a prism?
five different colors: red, green, blue, indigo, and violet
what state are electrons in?
groundstate
what happened to electrons to move them to what state
electrons being electrified moved them to excited state
can electrons stay at a level?
no
what happens when they fall back down?
light shines out
value for wavelength
length of a wave, meters and that stick person thing
what’s the speed of light
3 x 10 to 8 m/s
frequency
hertz, stretched out V, waves per second
orbitals of s, p, d, and f
s=1 p=3` d=5 f=7
heisenberg uncertainty principle
cannot know position and velocity of an electron at the same time
