chemical reaction
US /ˈkem.ɪ.kəl riˈæk.ʃən/
UK /ˈkem.ɪ.kəl riˈæk.ʃən/

1.
reação química
a process that involves rearrangement of the structure of molecules or ions, typically entailing the breaking and making of bonds, and resulting in the formation of new chemical substances
:
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Rusting is a common example of a chemical reaction.
A ferrugem é um exemplo comum de reação química.
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The experiment demonstrated a rapid chemical reaction.
O experimento demonstrou uma rápida reação química.