Emission Spectra and Bohr Model Flashcards
When current is passed through a gas at low pressure the atoms of the gas change from being in a … energy state to an … energy state
ground; excited
atoms can go back to a ground energy state by … some of the excess energy in the form of …
releasing; light
when current is passed through hydrogen gas it gives off a characteristic … light
pinkish
if this light is passed through a … it can be separated into the different … of light that make it up
prism; frequencies
the resulting bands of light are known as …
hydrogen’s line emission spectrum
when atoms become “excited”:
electrons in the atoms move to a higher energy level
atoms return to its ground state when…
the electron falls back down to a lower energy level
the electron releases energy in the form of light in order to…
reach the lower energy level
when an electron returns to a lower energy level they release…
photons of light
elements only release photons of…
certain colors
photons carry a specific amount of energy
(Ephoton= hv)
each element only releases specific amounts of…
energy
the amount of energy released is … to the energy difference between the two energy levels
equal
the energy … between the atoms’ energy states are fixed
differences
… of each element can only exist at very specific energy states
electrons
