reacted
Reacted is the past tense and past participle of the verb react. In general usage, to react means to respond to a stimulus, situation, or input. For example, one might say, “She reacted with surprise to the news.” In scientific contexts, react refers to a chemical or physical interaction, as in, “The substances reacted to form a precipitate,” or “The solution reacted with the acid.” The past tense is used for completed actions or in passive constructions: “The mixture was heated and then reacted with chlorine.”
Etymology and related forms: React comes from the Latin reactus, formed from re- meaning back or again
Usage notes: In grammar, react can be intransitive, meaning to respond in general, or transitive when there
See also: reaction, reactive, reaction rate, chemical equation.