Chapter 5 Flashcards
(34 cards)
Wavelength
The shortest distance between equivalent points on a continuous wave
Frequency
The number of waves that pass a given point per sound
Hertz
SI unit of frequency
Amplitude
Waves height from the origin to the crust
Electromagnetic spectrum
Includes all forms of electromagnetic radiation, types differ in frequency and wavelengths
Quantum concept
When objects are heated, they emit glowing light
Quantum
Minimum amount of energy that can be gained or lost by an atom
Joule
SI unit of energy
Photoelectric effect
Electrons are emitted from a metals surface when light of a certain frequency or higher shines on the surface
Photon
Massless particle that carries a quantum of energy
Atomic emission spectrum
Element set of frequencies of the electromagnetic waves emitted by atoms of the element
Energy of photon equation
Ephoton=hv
Energy of a quantum equation
Equantum=hv
Electromagnetic wave equation
C=v^(wavelength)
Electromagnetic radiation
Form of energy that exhibits wavelike behavior as it travels through space(microwaves)
Ground state
Lowest allowable energy state of an atom, closest to nucleus
Quantum number
N; a number assigned to each orbit; n=1 n=2
Heisenberg uncertainty principle
States its fundamentally impossible to know precisely both the velocity and position of a particle at the same time
De Broglie equation
All moving particles have wave characteristics
Quantum mechanical model of the atom
By schrödinger. The atomic model in which the electrons are treated as waves
Atomic orbital
Wave function predicts a three dimensional region around the nucleus
principle quantum number
Indicates the relative size and energy Of atomic orbitals.
Principle energy level
Each major energy level
Energy sublevels
Principal energy levels contain a sub level for each n= value