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An experimentally determined (proportionality) constant, which is different for different reactions and which changes only with temperature, k in the rate-law expression: Rate = k [A] x [B]v.

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Metallurgy

Refers to the overall processes by which metals are extracted from ores.

Electrodes

Surfaces upon which oxidation and reduction half-reactions, occur in electrochemical cells.

Nuclear Reactor

A system in which controlled nuclear fisson reactions generate heat energy on a large scale, which is subsequently converted into electrical energy.

Supersaturated Solution

A solution that contains a higher than saturation concentration of solute, slight disturbance or seeding causes crystallization of excess solute.

Group

A vertical column in the periodic table, also called a family.

Bond Energy

The amount of energy necessary to break one mole of bonds of a given kind (in gas phase).The amount of energy necessary to break one mole of bonds in a substance, dissociating the sustance in the gaseous state into atoms of its elements in the gaseous state.

Nodal Plane

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

 

Lewis Acid

Any species that can accept a share in an electron pair.

Surface Tension

It is the force in dynes acting along the surface of the liquid 1cm in length and perpendicular to it.

Atmosphere

A unit of pressure, the pressure that will support a column of mercury 760 mm high at 0 °C.