General chemistry

General chemistry

Industry: Chemistry

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General chemistry

Beryllium

Chemistry; General chemistry

Element 4, atomic weight 9.0122, an extremely toxic metal used as a neutron source and in phosphors.

Helium

Chemistry; General chemistry

Element 2, atomic weight 4.0026. A colorless, odorless, inert gas, first discovered in the emission spectrum of the sun in 1868.

Photosynthesis

Chemistry; General chemistry

A complex process used by many plants and bacteria to build carbohydrates from carbon dioxide and water, using energy derived from light.

Yield

Chemistry; General chemistry

The amount of product actually obtained in a chemical reaction.

Cystine

Chemistry; General chemistry

A naturally occuring amino acid with a disulfide bridge group on its side chain, formed by condensation of two cysteine residues.

Electrons have an intrinsic angular momentum that is similar to what would be observed if they were spinning. Electron spin is sometimes called a "twoness" property because it can have two values, ...

Beta particle

Chemistry; General chemistry

An electron emitted by an unstable nucleus , when a neutron decays into a proton and an electron. In some cases, beta radiation consists of positrons ("antielectrons" which are identical to ...