олефин

олефин

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 (CH2=CH2CH3), and 2-octane (CH3CH2=CH2(CH2)4CH3).

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олефин шайыры

화학; 유기 화학물질

Long-chain polymeric material produced by the chain reaction of olefinic monomers, such as polyethylene from ethylene, or polypropylene from propylene.

олефин кополимері

화학; 유기 화학물질

Polymer made by the interreaction of two or more kinds of olefin monomers, such as butylene and propylene.

альфа олефин

화학; 유기 화학물질

An olefin where the unsaturation (double bond) is at the alpha position, that is, between the two end carbons of the carbon chain.

майшыт

화학; 일반 화학

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

нейтрино

화학; 일반 화학

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

қос жылу

화학; 일반 화학

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

화학; 일반 화학

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

гидроксил

화학; 일반 화학

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

дәлдік

화학; 일반 화학

Precision is reproducibility. Saying "These measurements are precise" is the same as saying, "The same measurement was repeated several times, and the measurements were all very ...

뉴스 속의 용어

iPhone 4

The latest Apple iPhone as of June 15, 2010. iPhone 4 comes with such features as FaceTime, Retina display, multitasking, HD video, and a 5-megapixel ...