First Edition, 2007
ISBN 978 81 89940 48 5
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Table of Contents
1. Chemistry Dictionary
2. Biology Dictionary
3. Physics Dictionary
4. Mathematics Dictionary
Absolute Entropy (of a substance)
The increase in the entropy of a substance as it goes from a perfectly ordered
crystalline form at 0 °K (where its entropy is zero) to the temperature in question.
The zero point on the absolute temperature scale; -273.15°C or 0 K; theoretically,
the temperature at which molecular motion ceases.
Spectrum associated with absorption of electromagnetic radiation by atoms (or
other species) resulting from transitions from lower to higher energy states.
How closely a measured value agrees with the correct value.
A substance that produces H+(aq) ions in aqueous solution. Strong acids ionize
completely or almost completely in dilute aqueous solution. Weak acids ionize
The oxide of a nonmetal that reacts with water to form an acid.
Compound produced by dehydration of a carbonic acid; general formula is R--C--
A salt containing an ionizable hydrogen atom; does not necessarily produce acidic
Amount of energy that must be absorbed by reactants in their ground states to
reach the transition state so that a reaction can occur.
Metal with low ionization energy that loses electrons readily to form cations.
Activity (of a component of ideal mixture)
A dimensionless quantity whose magnitude is: equal to molar concentration in an
ideal solution; equal to partial pressure in an ideal gas mixture; and defined as 1
for pure solids or liquids.
A listing of metals (a