Chapter 7 - Quantum, Atomic, and Nuclear Physics

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22 Terms

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Photoelectric effect
The ________ is when incident light is shined on a metal, electrons detach.
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mass defect
The ________ may become the nuclear binding energy and will be equal to the strong nuclear force that holds the nucleus together.
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Fission reactions
________ are when a heavy nucleus is split into two chunks.
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N1
________ is called the ground state- the lowest possible energy level for the electron.
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Beta
________ (β) decay is when either a positron or electron is emitted.
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Mass
________ is a solid form of energy and can be converted into energy and vice versa.
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ɸ
________ is the work function- the energy required to remove an electron from a specific element /material.
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Alpha
________ (𝞪) decay is when a Helium nucleus is emitted from the original isotope.
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Antimatter
every normal particle has a(n) ________ to match it (electron and positron)
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photon
When a(n) ________ collides with an atom and the atom emits an electron, momentum and energy are conserved.
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Fusion reactions
________ are when two light nuclei combine to make a heavier and stable nucleus.
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The probability of finding the particle at a certain location
Particles have a wave function representing _________________________.
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h
____ is Planck’s constant
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Threshold frequency
_______________ is the minimum frequency for electron emission
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λ
___ represents de Broglie’s wavelength
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Alpha particle (𝞪)
The __________ is two protons and two neutrons together (helium nucleus)
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Beta particle (β)
The ____________ is either an electron or positron
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Isotopes
__________ have same atomic number of an element but different mass numbers
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Alpha (𝞪) decay
The ____________ is a Helium nucleus is emitted from the original isotope
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Mass defect
____________ is the slight difference in mass between the total mass present before the decay and after the decay
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Half-life
___________ is the time it takes for a radioactive isotope to decay half its original amount
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Induced Reaction
An __________________ is when scientists bombard a nucleus with high-speed particles to induce the emittance of a proton