көміртек

көміртек

Element 1, atomic weight 1.00797. The most abundant element in the universe. Hydrogen occurs as H2 at ambient temperature and pressure, a colorless, odorless, and extremely flammable gas. Discovered in 1766 by Cavendish.

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Settore/Dominio: Chimica
Categoria: Chimica (generale)
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көміртек диоксиді

Geografia; Geografia fisica

An atmospheric gas which has in modern times made up approximately 0.03% of the atmosphere by volume. It is vital for photosynthesis and for its contribution to the greenhouse ...

көміртек оксиді

Geografia; Geografia fisica

A gas produced through inefficient and therefore incomplete combustion of fossil fuels.

көміртек диоксиді

Astronomia; Marte

A gas used by all green plants and recycled by them to form wood and the oxygen we breathe. In very large quantities it can be poisonous to animal life.

олефин

Chimica; Chimica (generale)

A compound that consists of only carbon and hydrogen, that contains at least one carbon-carbon double bond. Alkene names end with -ene. Examples are ethylene (CH2=CH2); 1-propene ...

майшыт

Chimica; Chimica (generale)

A colloid formed from tiny liquid droplets suspended in another, immiscible liquid. Milk is an example of an emulsion.

нейтрино

Chimica; Chimica (generale)

An elementary particle produced by certain nuclear decay processes. Neutrinos have no charge and extremely small masses compared to other subatomic particles.

қос жылу

Chimica; Chimica (generale)

A device that senses temperature changes by using a pair of joined wires made of dissimilar metals that produces a voltage that changes with temperature.

калориметр

Chimica; Chimica (generale)

An insulated vessel for measuring the amount of heat absorbed or released by a chemical or physical change.

гидроксил

Chimica; Chimica (generale)

1. An -OH group within a molecule. 2. A free radical formed by abstraction of a hydrogen atom from water.

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Settore/Dominio: Vita privata Categoria: Divorzio

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A formal ceremony to officially end a marriage by exchanging divorce vows and returning the wedding rings. As divorce becomes more common, a divorce ...