General chemistry

General chemistry

Industry: Chemistry

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General chemistry

Drug

Chemistry; General chemistry

A biologically active compound or mixture used to cure, prevent, or detect disease, to control biological processes, or to alter mental state.

Molar volume

Chemistry; General chemistry

The volume occupied by one mole of a material. For example, the molar volume of an ideal gas at STP is 22.4 L/mol.

Superconductivity

Chemistry; General chemistry

The ability of certain materials to carry an electric current with zero electrical resistance .

Active site

Chemistry; General chemistry

A pocket or crevice on an enzyme molecule that fits reactant molecules like a hand in a glove. The active site lowers the activation energy for reaction.

A electrolytic cell that uses a moist paste rather than a liquid as an electrolyte . Flashlight batteries are dry cells with a zinc cup for an anode , a carbon rod for a cathode , and a paste made ...

Mole

Chemistry; General chemistry

SI unit for amount of substance, defined as the number of atoms in exactly 12 g of carbon-12. One mole of a molecular compound contains Avogadro's number molecules and has a mass equal to the ...