light behaves like a _____ and a ______
particle and a wave
electromagnetic radiation
energy that acts like a wave when it travels through space
what forms the electromagnetic spectrum
all types of electromagnetic radiation
what symbol represents wavelength
y upside down
what is wavelength
distance between two wave crests
electromagnetic radiation moves at what speed
speed of light 3.00x10 8
what letter represents frequency
v
what is frequency
of waves that pass a point at a certain amount of time
what’s the unit for frequency
hertz
what has more energy, high or low frequency?
low
what is the photoelectric effect
emission of electrons from a metal when a light shines on it
what’s a quantum
minimum ammount of energy that can be gained/lost by an atom
energy’s lowest state is called
ground state
an atom that has a higher state is said to be in a
excited state
how is energy given off an atom
light
how did scientists find hydrogens line emission spectrum?
ran electricity through it
what did the hydrogens line emission spectrum discovery lead to?
the quantum theory
what does the heisenberg uncertainty principle state?
it’s impossible to determine the position + velocity of an electron
what does quantum theory describe
the wave properties of electrons mathematically
what’s an orbital
region around the nucleus that indicates the probable location of an electron
