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Unit of electrical charge.

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Double Salt

Solid consisting of two co-crystallized salts.

 

Iron

Discovered : known to ancient civilisations.

Origin : The name comes from the Anglo-Saxon ‘iren’, and the symbol from the Latin ‘ferrum’, meaning iron.
Description :Iron is an enigma - it rusts easily and yet is the most important of all metals, world production exceeds 700 million tons a year. Small amounts of carbon are added to iron to produce steel and when chromium.
is added to this, the result is non-corroding stainless steel (small amounts of nickel may also be added). Iron is also an essential element for all forms of life. The average human contains about 4 grams, much of which circulates as haemoglobin in the blood, the job of which is to carry oxygen from our lungs to where it is needed. If the diet does not contain 10 milligrams a day, anaemia will eventually develop. Foods such as liver, kidney, molasses, brewer’s yeast, cocoa and liquorice contain a lot of iron.
Atomic No:26 Mass No:56

Peroxide

A compound containing oxygen in the -1 oxidation state. Metal peroxides contain the peroxide ion, O22

Reaction Stoichiometry

Description of the quantitative relationships among substances as they participate in chemical reactions.

Fractional Distillation

The process in which a fractioning column is used in distillation apparatus to separate components of a liquid mixture that have different boiling points.

Structural Isomers

Compounds that contain the same number of the same kinds of atoms in different geometric arrangements.

Heat Capacity

The amount of heat required to raise the temperature of a body (of any mass) one degree Celsius.

Graham's Law

The rates of effusion of gases are inversely proportional to the square roots of their molecular weights or densities.

Heat of Crystallization

The amount of heat that must be removed from one gram of a liquid at its freezing point to freeze it with no change in temperature.

Metallurgy

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