Quantum Phenomena

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When electromagnetic radiaton is above a certain frequency a electron is emitted, this is the _______ effect
Photoelectric
1 of 17
Photoelectric emission does happen is the frequency is below the _______ frequency.
Threshold
2 of 17
What term is the same as the minimum energy to release an electron?
Work Function
3 of 17
If the __ is lower than the work function, an electron can not be emitted
hf
4 of 17
What unit is the work function in?
Joules
5 of 17
Light can travel as a ______, which transfers energy in packets
Particle
6 of 17
The wave-like nature of an electron is observed when what happens?
Diffraction
7 of 17
If the energy exceeds the work function value, what does the particle use it as?
Kinetic Energy
8 of 17
when inside a flourescent tube, the photons emitted from the mercury are what?
Ultraviolet
9 of 17
Electrons passing through a flourescent tube create ____ when they collide with atoms of gas
Ions
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Electrons that absorb energy from colliding electrons without being ionised are what?
Excited
11 of 17
When excitation occurs an electron moves up an energy level, from what?
Ground State
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When the electron moves back down to a lower energy level, producing a photon, this is called what?
De-excitation
13 of 17
By measuring what, on a line spectrum, you can identify the element that produced the light.
Wavelength
14 of 17
No other element produces the same pattern of light wavelengths. This is because the energy levels are ______ to that atom.
Unique
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The particle-like nature of an electron is observed in what?
Photoelectricity
16 of 17
The wave-like behaviour of the particle can be workout out by calculating what wavelength?
De Broglie
17 of 17

Other cards in this set

Card 2

Front

Photoelectric emission does happen is the frequency is below the _______ frequency.

Back

Threshold

Card 3

Front

What term is the same as the minimum energy to release an electron?

Back

Preview of the front of card 3

Card 4

Front

If the __ is lower than the work function, an electron can not be emitted

Back

Preview of the front of card 4

Card 5

Front

What unit is the work function in?

Back

Preview of the front of card 5
View more cards

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