General chemistry

General chemistry

Industry: Chemistry

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General chemistry

Gamma rays

Chemistry; General chemistry

A very high energy form of electromagnetic radiation , typically with wavelengths of less than 3 pm. Gamma rays are produced by certain nuclear decay processes, and are used to sterilise food.

Period

Chemistry; General chemistry

Rows in the periodic table are called periods. For example, all of the elements in the second row are referred to as 'second period elements'. All elements currently known fall in the first seven ...

Voltammeter

Chemistry; General chemistry

An instrument for measuring voltages and amperages .

Core electron

Chemistry; General chemistry

Electrons occupying completely filled shells under the valence shell .

The kilogramme (kg) is the base unit of mass in the SI system of units. The standard kilogramme is a 1 kg corrosion resistant platinum/iridium cylinder, carefully preserved in the suburbs of Paris ...