quantum Flashcards
1
Q
KEmax formula
A
KEmax = hf - work function
2
Q
grnd state
A
lowest energy level where n=1
3
Q
cool gas
A
gas containing atoms in their ground state
4
Q
excited gas
A
contains atom in excited energy states
5
Q
de brogilie wavelength formula
A
lambda = h/mv
6
Q
photoelectric effect
A
where electrically charged particles are released from a material when it absorbs em radiation
7
Q
work function
A
min energy rqd to release photoelectron from surface of a metal
8
Q
stopping potential
A
potential neccesary to stop electrons with max KE from reaching the anode
9
Q
ionisation
A
electrons gain enough energy to be removed from atom entirely
10
Q
excitation
A
promotion of electrons from low to higher energy levels within atom
11
Q
ionisation energy
A
energy rqd to remove 1 electron from an atom to turn it into an ion
