CHAPTER 9 KEY WORDS | ACC. CHEM

a particle of light or a packet of light energy

• mole

• gamma ray

• photon

• X-ray

the precise amount of energy possessed by a photon; the difference in energy between two atomic orbitals

• quantum

• electromagnetic energy

• kinetic energy

• spectrum

the part of the electromagnetic spectrum between the infrared region and the radio wave region

• gamma rays

• X-rays

• microwaves

• ultraviolet light

the fraction of the electromagnetic spectrum that is visible to the human eye, bounded by wavelengths of 400 nm and 780nm

• microwaves

• infrared light

• visible light

• ultraviolet light

a spectrum that includes all wavelengths of electromagnetic radiation

• emission spectrum

• electromagnetic spectrum

• solar spectrum

• color wheel

the electrons in the outermost principal shell of an atom; they are involved in chemical bonding

• quanta

• core electrons

• photons

• valence electrons

the region around the nucleus of an atom where an electron is most likely to be found

• principle shell

• orbit

• valence shell

• orbital

the electrons that are not in the outermost principal shell of an atom

• positrons

• outer electrons

• core electrons

• valence electrons

the number of wave cycles or crests that pass through a stationary point in one second

• amplitude

• phase

• frequency

• wavelength

an electron configuration in which electrons are represented as arrows in boxes corresponding to orbitals of a particular atom

• structural formula

• space filling model

• electron configuration

• orbital diagram