化学反応(かがくはんのう)

かがくはんのう
noun
chemical reaction
science
1. chemical reaction
A process in which substances interact to form new substances with different properties. Also used figuratively to describe an unexpected interaction between people or ideas that produces something new.
化学反応(かがくはんのう)が起(お)きた。
A chemical reaction occurred.
化学反応(かがくはんのう)の速度(そくど)は温度(おんど)によって変(か)わる。
The speed of a chemical reaction changes depending on temperature.
二人(ふたり)のアーティストの出会(であ)いが化学反応(かがくはんのう)を起(お)こし、素晴(すば)らしい作品(さくひん)が生(う)まれた。
The meeting of the two artists created a chemical reaction, and a wonderful work was born.

Compound of 化学(かがく) (chemistry) + 反応(はんのう) (reaction). Used both in scientific and figurative contexts.

Common collocations

  • 化学反応(かがくはんのう)が起(お)きる: a chemical reaction occurs
  • 化学反応(かがくはんのう)を起(お)こす: to cause a chemical reaction
  • 化学反応式(かがくはんのうしき): chemical equation

Usage

Often used metaphorically to describe a dynamic or unexpected synergy between people, ideas, or elements that produces something new and exciting. Common in media, sports, and creative contexts (e.g., "the chemistry between the two actors").

Related words

  • 反応(はんのう): reaction (general)
  • 化学変化(かがくへんか): chemical change — synonym emphasizing the result rather than the process
general
Added 2026.4.3 5:27 · Revised 2026.9.2 13:02
21500/21670_kagakuhannou