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17 Cards in this Set

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What is is electromagnetic radiation?
A form of energy that exhibits wavelike behavior as it travels through space.
What is the electromagnetic spectrum?
The combination of all the forms of electromagnetic radiation.
What is a wavelength?
The distance between corresponding points on adjacent waves.
What is frequency?
The number of waves that pass a given point in a specific time, usually one second.
What is the photoelectric effect?
The emission of electrons from a metal when light shines on the metal.
What is a quantum?
The minimum quantity of energy that can be lost or gained by an atom.
What is a photon?
A particle of electromagnetic radiation having zero mass and carrying a quantum of energy.
What is a ground state?
The lowest energy state of an atom.
What is an excited state?
A state in which an atom has a higher potential energy than its ground state.
What is Heisenberg's uncertainty principle?
It states that it is impossible to determine simultaneously both the position and velocity of an electron or any other particle.
What is the quantum theory?
It describes mathematically the wave properties of electrons and other very small particles.
What is an orbital?
A three-dimensional region around the nucleus that indicates the probable location of an electron.
What is quantum number?
It specifies the properties of atomic orbitals and the properties of electrons in orbitals.
What is the principal quantum number?
It indicates the main energy level occupied by the electron.
What is the angular momentum quantum number?
It indicates the shape of the orbital.
What is the magnetic quantum number?
It indicates the orientation of an orbital around the nucleus.
What is the spin quantum number?
It has only two possible values, which indicate the two fundamental spin states of an electron in an orbital.