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A-Level化学有机反应机理搞不懂?

  • 2020-06-03     
  • 268 人浏览
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A-Level化学 Organic chemistry中比较难理解的就是反应机理(Mechanism)。要想理解反应机理,为大家总结17个必备定义哦!

Functional group

a group of atoms responsible for the characteristic reactions of an organic compound.

Homolytic fission

the splitting of a covalent bond where each atom retains one electron from the bonding pair.

Heterolytic fission

the splitting of a covalent bond where one atom retains both electrons from the bonding pair.

Free radical

an uncharged molecule with an unpaired electron.

A-Level化学有机反应机理搞不懂?

Initiation

an initial chemical reaction which triggers further reactions.

Propagation

a secondary reaction where there is no net gain or loss of free radicals.

Termination

the final step in a chain reaction where a reactive intermediate is rendered inactive.

Nucleophile

a molecule or substance that donates electrons.

Electrophile

a molecule or substance that acts as an electron pair acceptor.

Addition

a reaction where two or more molecules react to form a larger molecule.

Substitution

a reaction where an atom or group is replaced by another atom or group.

Elimination

a reaction in which two substituents are removed from a molecule in a mechanism with one or two steps.

Hydrolysis

the splitting up of a compound or molecule using water.

Hydrolysis

the splitting up of a compound or molecule using water.

Condensation

the formation of a compound with the release of water.

Oxidation

the formation of a compound with the release of water.

Reduction

gain of electrons.

以上就是小编为大家整理的关于A-Level化学考试有机反应机理要点,希望对大家有所帮助。更多A-Level考试题目下载、A-Level成绩查询网站等问题可以咨询我们。


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