http://www.ck12.org Chapter 27. Glossary
27.8 H
half-reaction
Contains only half the entire redox process. One half-reaction illustrates the oxidation component while the
other half-reaction illustrates the reduction component.halogenation
Chemical reaction where a halogen atom is included in a molecule.heat capacity
The amount of heat need to raise a specified amount of material one degree Celsius. Can be calculated using
the formula C=ms.heat energy
Chemical reactions involve a transfer of heat energy. Measured in joules.Heisenberg’s Uncertainty Principle
Heisenberg described mathematically the phenomena revealed by Young’s double slit experiment. He showed
that it is impossible to determine simultaneously both the exact location and exact velocity of an electron or
any other particle.Henry’s Law
Describes mathematically the relationship between the vapor pressure of the solution in terms of solute
concentration.Hess’s law
States that regardless of the multiple stages or steps of a reaction, enthalpy change overall encompasses the
sum of all changes.heterogeneous mixtures
Mixtures that include two or more distinct phases, which contain nonequivalent proportions of the mixture
components.homogeneous mixtures
Mixtures that have a constant composition throughout.humidity
Quantity of water vapor in the air.Hund’s Rule
The rule states that orbitals of equal energy are each occupied by one electron before any orbital is occupied
by a second electron, and all electrons in singly occupied orbitals must have the same spin.hybridization
The mixing of atomic orbitals in an atom (usually a central atom) to generate a set of hybrid orbitals.