Meaning of the word "addition reaction" in English

What does "addition reaction" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

addition reaction

US /əˈdɪʃ.ən riˈæk.ʃən/
UK /əˈdɪʃ.ən riˈæk.ʃən/
"addition reaction" picture

Noun

1.

a chemical reaction in which two or more molecules combine to form a larger one, with no other products

Example:
The hydrogenation of alkenes is a common example of an addition reaction.
In an addition reaction, unsaturated compounds become saturated.
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