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Chemistry Terms - U-W
20 cards·by tiffreja
termschemistryvocabsciencevocabulary
UN number
a four digit code used to note hazardous and flammable substances
Uncertainty
a characteristic that any measurement that involves estimation of any amount cannot be
exactly reproducible
Uncertainty principle
knowing the location of a particle makes the momentum uncertain while knowing the momentum of
a particle makes the location uncertain
Unit cell
the smallest repeating unit of a lattice
Unit factor
statements used in converting between units
UN number
a four digit code used to note hazardous and flammable substances
Uncertainty
a characteristic that any measurement that involves estimation of any amount cannot be
exactly reproducible
Uncertainty principle
knowing the location of a particle makes the momentum uncertain while knowing the momentum of
a particle makes the location uncertain
Unit cell
the smallest repeating unit of a lattice
Unit factor
statements used in converting between units
Universal or ideal gas constant
proportionality constant in the ideal gas law (0.08206 L-atm/(K-mol))
Vapor
when a substance is below the critical temperature while in the gas phase
Vapour pressure
pressure of vapour over a liquid at equilibrium
Vaporization
phase change from liquid to gas
Viscosity
the resistance of a liquid to flow (oil)
Volt
one joule of work per coulomb - the unit of electrical potential transferred
Voltmeter
instrument that measures the cell potential
Valence electron
the outermost electrons of an atom
Valence bond theory
a theory explaining the chemical bonding within molecules by discussing valencies; the
number of chemical bonds formed by an atom
Van der Waals force
one of the forces (attraction/repulsion) between molecules