Units and Formulas
A unit which describes 6.022 x 1023 things
Mole
The cloud-like spaces where electrons move around
orbitals
The scientific name for light
Electromagnetic Radiation
the distance between two peaks of a wave
wavelength
The scientist who came up with the planetary model of atoms
Niels Bohr
the constant which can be used to convert from moles to grams and from grams to moles
Avogadro's Constant. 6.022 x 1023 particles/mole
The state electrons are in when they have gained energy and moved up to higher energy levels
Excited state
The range of all wavelengths of light, visible and invisible
Electromagnetic Spectrum
The number of waves that pass a point in a set amount of time
frequency
The scientist who theorized that energy is made of particles
Max Planck
The mass, in grams, of one mole of a substance
molar mass
The state in which electrons are at their lowest possible energy level, close to the nucleus
Ground State
Range of wavelengths of visible light
400-750nm
If the frequency of a wave is high, then the wavelength is….
Substances made of atoms which hold onto energy and release it slowly are called this
phosphorescent
The letters ( H2SO4) in a chemical formula represent this
the elements
The principle that says no two electrons can inhabit the same place
Pauli Exclusionary principle
a particle of light energy
photon
Atoms release energy as this
photons
to determine the amount of a each element in a substance you find the
percent composition
The subscripts (H2SO4)in a chemical formula represent this
the number of each type of atom
The result of an atom colliding with another atom or a photon
it becomes excited and the atom moves more, plus the electrons jump up to a higher energy level
3 types of invisible EMR
Xray, Microwave, Gamma ray, AM radio, FM radio, UV, IR,
The equation that shows how the energy of a photon is inversely proportional to its wavelength is called
Planck's relation
A chemical formula with the lowest (simplest) whole number ratio of atoms
empirical formula