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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 ...
Core electron
Chemistry; General chemistry
Electrons occupying completely filled shells under the valence shell .
Kilogramme
Chemistry; General chemistry
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 ...
Short term memory
Chemistry; General chemistry
Short term memory is a mechanism for storing temporary information, such as where you parked your car or numbers in a simple arithmetic problems.
Atto-
Chemistry; General chemistry
Prefix used in the SI system meaning "multiply by 10-18". For example, 3 am means 3× 10-18 meters.
