# Flashcards - TExMaT Master Science Teacher 8-12: Basic Structure of the Atom

Flashcards - TExMaT Master Science Teacher 8-12: Basic Structure of the Atom
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nucleus
In cell biology, the nucleus is a membrane-enclosed organelle found in eukaryotic cells
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element
In mathematics, an element, or member, of a set is any one of the distinct objects that make up that set
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atom
An atom is the smallest constituent unit of ordinary matter that has the properties of a chemical element
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principal quantum number
In quantum mechanics, the principal quantum number is one of four quantum numbers which are assigned to each electron in an atom to describe that electron's state
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photon
A photon is an elementary particle, the quantum of all forms of electromagnetic radiation including light
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ground state
The ground state of a quantum mechanical system is its lowest-energy state; the energy of the ground state is known as the zero-point energy of the system
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ground state
The ground state of a quantum mechanical system is its lowest-energy state; the energy of the ground state is known as the zero-point energy of the system
photon
A photon is an elementary particle, the quantum of all forms of electromagnetic radiation including light
principal quantum number
In quantum mechanics, the principal quantum number is one of four quantum numbers which are assigned to each electron in an atom to describe that electron's state
atom
An atom is the smallest constituent unit of ordinary matter that has the properties of a chemical element
element
In mathematics, an element, or member, of a set is any one of the distinct objects that make up that set
nucleus
In cell biology, the nucleus is a membrane-enclosed organelle found in eukaryotic cells
beta decay
In nuclear physics, beta decay is a type of radioactive decay in which a beta ray, and a respective neutrino are emitted from an atomic nucleus
half-life
Half-life is the time required for a quantity to reduce to half its initial value
electron shell
In chemistry and atomic physics, an electron shell, or a principal energy level, may be thought of as an orbit followed by electrons around an atom's nucleus
amu
The unified atomic mass unit or dalton is the standard unit that is used for indicating mass on an atomic or molecular scale
neutron
The neutron is a subatomic particle, symbol n or n0, with no net electric charge and a mass slightly larger than that of a proton
subatomic particles
In the physical sciences, subatomic particles are particles much smaller than atoms

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