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A nuclear reactor that produces more fissionable nuclear fuel than it consumes.

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Standard Electrode Potential

By convention, potential, Eo, of a half-reaction as a reduction relative to the standard hydrogen electrode when all species are present at unit activity.

 

20 interesting chemistry facts

20 interesting chemistry facts.

Corrosion

Oxidation of metals in the presence of air and moisture.

Law of Definite Proportions (Law of Constant Composition)

The law stating that a pure substance will always have the same percent by weight. Different samples of a pure compound always contain the same elements in the same proportions by mass.

Element

A substance that cannot be decomposed into simpler substances by chemical means.

Hydrate

A solid compound that contains a definite percentage of bound water.

Rate of Reaction

Change in the concentration of a reactant or product per unit time.

Chemical Equilibrium

A state of dynamic balance in which the rates of forward and reverse reactions are equal, there is no net change in concentrations of reactants or products while a system is at equilibrium.

Oxidation Numbers

Arbitrary numbers that can be used as mechanical aids in writing formulas and balancing equations, for single- atom ions they correspond to the charge on the ion, more electronegative atoms are assigned negative oxidation numbers (also called Oxidation states).

Absolute Zero

The zero point on the absolute temperature scale, -273.15°C or 0 K, theoretically, the temperature at which molecular motion ceases. The concept of an absolute zero temperature was first deduced from experiments with gases. When a fixed volume of gas is cooled, its pressure decreases with its temperature. Absolute zero physically possesses quantum mechanical zero-point energy.