General chemistry

General chemistry

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General chemistry

Permanganate

Chemistry; General chemistry

Permanganate ion (MnO4-) is a powerful oxidising agent used in chemical analysis and water treatment. The ion has an intense purple color.

Hard water is water contaminated with compounds of calcium and magnesium. Dissolved iron, manganese, and strontium compounds can also contribute to the "total hardness" of the water, which is usually ...

Covalent compound

Chemistry; General chemistry

A compound made of molecules - not ions. The atoms in the compound are bound together by shared electrons. Also called a molecular compound.

Law

Chemistry; General chemistry

Natural laws summarise patterns that recur in a large amount of data. Unlike human laws, natural laws don't forbid or permit; they describe.

Soap

Chemistry; General chemistry

A salt of a fatty acid . For example, sodium stearate is a soap made by neutralising stearic acid. Commercial soaps are mixtures of fatty acid salts.

Auxochrome

Chemistry; General chemistry

A group or substructure in a molecule that influences the intensity of absorption of the molecule.

Glutamate receptors

Chemistry; General chemistry

Glutamate receptors are protein molecules that helps gate the flow of ions across a nerve cell's membrane. They play a role in the formation of new connexions between nerve cells (and so, in learning ...