substitution reaction
Pronunciation
Noun
B2 Upper-intermediate
Quick answer
A chemical reaction in which one atom or group in a molecule is replaced by another.
Test yourself
Which word fits the gap? "In the _____, a chlorine atom replaced one of the hydrogen atoms on the original molecule."
Answer: substitution reaction
In your own words, what does "substitution reaction" mean?
A chemical reaction in which one atom or group in a molecule is replaced by another.
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