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The direct vaporization of a sold by heating without passing through the liquid state.

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Ferromagnetism

The ability of a substance to become permanently magnetized by exposure to an external magnetic field.

Spectrum

Display of component wavelengths (colours) of electromagnetic radiation.

Corrosion

Oxidation of metals in the presence of air and moisture.

Carcinogen

A substance capable of causing or producing cancer in mammals.

 

Eutrophication

The undesirable overgrowth of vegetation caused by high concentrates of plant nutrients in bodies of water.

Effective Collisons

Collision between molecules resulting in a reaction, one in which the molecules collide with proper relative orientations and sufficient energy to react.

 

Alkaline Battery

A dry cell in which the electrolyte contains KOH.

Inert s-pair Effect

Characteristic of the post-transition minerals, tendency of the outermost s electrons to remain nonionized or un shared in compounds.

Calorie

The amount of heat required to raise the temperature of one gram of water from 14.5°C to 15.5°C. 1 calorie = 4.184 joules.

Phenol

Hydrocarbon derivative containing an [OH] group bound to an aromatic raing.