Noun
(chemistry) a process in which one or more substances are changed into others
Source: WordNetEvery chemical reaction has a transition state. Derek Barton
Falling in love is a chemical reaction. But it wears off in a year. Yakov Smirnoff
The development of a rational view of the nature of catalysis was thus absolutely dependent on the creation of the concept of the rate of chemical reaction. Wilhelm Ostwald
Nowadays, however, we recognize that simultaneously with the typical case of a chemical reaction a typical case of catalytic effect had been studied which constitutes a limiting case. Wilhelm Ostwald
When we meet an Imago match, that chemical reaction occurs, and love ignites. All other bets, all other ideas about what we want in a mate, are off. We feel alive and whole, confident that we have met the person who will make everything all right. Harville Hendrix
Virtually every chemical reaction in a cell occurs at a significant rate only because of the presence of enzymes. Albert L. Lehninger