pressure : Force/area
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product : The thing you make in a chemical reaction.
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quantum theory : The branch of physical chemistry that describes how
energy can only exist at certain levels and makes generalizations about how
atoms behave from this assumption.
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radioactive : When a substance has an unstable nucleus that can fall apart,
it's referred to as radioactive.
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Raoult's Law : The vapor pressure of a solution is directly proportional to the
mole fraction of the solvent.
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rate determining step : The slowest step in a chemical reaction.
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rate law : A mathematical expression for the speed of a reaction as a function
of concentration. A hint: It's usually true that things go faster if you have more
stuff in the first place.
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redox reaction : A reaction that has both an oxidation and reduction.
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resonance structure : When more than one valid Lewis structure can be
drawn for a molecule, these structures are said to be resonance structures.
Resonance structures arise from the fact that the electrons are delocalized.
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reversible reaction : A reaction in which the products can make reagents, as
well as the reagents making products.
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root mean square velocity (RMS velocity) : The square root of the average
of the squares of the individual velocities of the gas particles in a mixture. To
put it in a way that a normal human can understand, it's the average of how
fast the particles in a gas are going (assuming you ignore the direction they're
traveling in).
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salt : An ionic compound.
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saturated : When the maximum amount of solute is dissolved in a liquid
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