Untitled Deck Flashcards
What is electromagnetic radiation?
A form of energy that exhibits wavelike behavior through space.
What is the electromagnetic spectrum?
All forms of electromagnetic radiation.
What is 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?
Refers to the emission of electrons from a metal when light shines on the metal.
What is a quantum?
The minimal 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 the ground state?
The lowest energy state.
What is the excited state?
The highest energy state.
What is a line emission spectrum?
They put a pinkish light they got from a vacuum through a prism and it separated into four colors. It’s the four bands of light.
What is Bohr’s Model?
The electron can circle the nucleus only in orbits.
What is the Heisenberg uncertainty principle?
It states that it’s impossible to determine simultaneously both the position and velocity of an electron or any particle.
What is quantum theory?
Describes the wave properties of electrons.
What is the principle quantum number?
The main energy level occupied by the electron.
What is an orbital?
A 3D region around the nucleus that indicates the possible location of an electron.
What are quantum numbers?
Describes atomic orbitals.
What is angular momentum in terms of orbitals?
Type of orbital: SPDF.
What is the magnetic quantum number?
Indicates which or how many orbitals there are.
How many orbitals are there for S, P, D, and F?
S: 1, P: 3, D: 5, F: 7.
What is the spin quantum number?
Indicates the spin of the electron.
What is electron configuration?
The arrangement of electrons in an atom.
What is Aufbau’s principle?
An electron fills the lowest energy orbital that can receive it.
What is Pauli’s exclusion principle?
No two electrons in the same atom can have the same set of four quantum numbers; 2 electrons can occupy the same orbital but they must be spinning in opposite directions.
What is Hund’s principle?
Orbitals of equal energy are each occupied by one electron before any orbital is occupied by a second.
How are wavelength and frequency mathematically related?
c = wavelength × frequency.
What did the photoelectric effect lead to?
The particle description of light.
