молекула

молекула

The smallest particle of an element or compound that retains the chemical properties of the element or compound. A molecule is a collection of chemically bound atoms with characteristic composition and structure. Making or breaking bonds in a molecule changes it into a new molecule. Ionic compounds are not composed of molecules, because there is no distinct collection of ions that are chemically bound in the crystal.

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полиатомдық молекула

Химия; Общая химия

A polyatomic molecule is an uncharged particle that contains more than two atoms.

тетрафункционалды молекула

Химия; Органическая химия

A chemical structure that possesses four highly reactive sites.

амфипатиялық молекула

Химия; Органическая химия

A molecule having both hydrophilic and hydrophobic groups; examples are wetting agents and membrane lipids such as phosphoglycerides.

молекула арасындағы күш

Химия; Общая химия

An attraction or repulsion between molecules. Intermolecular forces are much weaker than chemical bonds. Hydrogen bonds, dipole-dipole interactions, and London forces are examples ...

кереғар емес молекула

Химия; Общая химия

A molecule in which the center of positive charge and the center of negative charge coincide. Examples are CCl4 and CO2; counterexamples are CHCl3 and H2O.

олефин

Химия; Общая химия

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

Химия; Общая химия

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

нейтрино

Химия; Общая химия

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

қос жылу

Химия; Общая химия

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

Химия; Общая химия

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

гидроксил

Химия; Общая химия

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

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(basketball term) any ball that is not live; occurs after each successful field goal or free-throw attempt, after any official's whistle or if the ...