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Particles comprising the nucleus, protons and neutrons.

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Nodal Plane

A region in which the probability of finding an electron is zero.

 

Spectrochemical Series

Arrangement of ligands in order of increasing ligand field strength.

Equilibrium Constant

A quantity that characterizes the position of equilibrium for a reversible reaction, its magnitude is equal to the mass action expression at equilibrium. K varies with temperature.

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Chemistry & Environmental Dictionary - Contains definitions for many chemistry, environmental and other related technical terms and acronyms.
EDF Chemical Scoreboard - Toxic Release Inventory data for the US. Sources and amounts of toxic chemicals released to air and water. Also has information on health effects and other topics.
Chemistry Articles - Collection of chemistry and chemical related articles.

 

Explosive

A chemical or compound that causes a sudden, almost instantaneous release or pressure, gas, heat and light when subjected to sudden shock, pressure, high temperature or applied potential.

Insulator

Poor electric and heat conductor.

Fast Neutron

A neutron ejected at high kinetic energy in a nuclear reaction.

Molecular Orbital Theory

A theory of chemical bonding based upon the postulated existence of molecular orbitals.

Standard Molar Volume

The volume occupied by one mole of an ideal gas under standard conditions, 22.4liters.

Hydrogen-Oxygen Fuel Cell

Fuel cell in which hydrogen is the fuel (reducing agent) and oxygen is the oxidizing agent.