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化学反应 (huà xué fǎn yìng) — chemical reaction

Definition

noun
chemical reaction

Examples

  • 化学反应。
    Liǎng zhǒng wù zhì hùn hé hòu fā shēng le huà xué fǎn yìng.
    After mixing two substances, a chemical reaction occurred.
  • 化学反应。
    Wēn dù duì huà xué fǎn yìng de sù dù yǐng xiǎng hěn dà.
    Temperature has a great influence on the speed of chemical reactions.
  • 化学反应。
    Zhè ge huà xué fǎn yìng xū yào hěn gāo de wēn dù cái néng jìn xíng.
    This chemical reaction requires a very high temperature to proceed.

Origin

Compound word
构词法gòucífǎ
偏正piānzhèngModifier + head

The first part narrows down the second: it says what kind of thing the head is.

化学chemistry
化huàtransform学xuéstudy
偏正Modifier + head
反应response
反fǎnrespond应yìngrespond
联合Coordinate

化学 means chemistry and 反应 means response; together they name a chemical reaction.

Characters in this word

Two or more meaningful parts placed together so that their meanings combine into a new one.

化 shows two person figures, one upright and one upside down, to give the idea of reversal or change.

Open 化 →

Most characters — around four in five — are built this way: one part hints at the meaning, the other at the pronunciation.

This origin belongs to the traditional form 學; 学 is its simplified writing.

The traditional form 學 may have used 爻 and 六 for sound, with hands and a child added later; the simplified 学 is a shorthand.

Open 学 →

Most characters — around four in five — are built this way: one part hints at the meaning, the other at the pronunciation.

Meaning part形符xíngfú
又又yòuhand
Sound part声符shēngfú
厂
厂chǎng反fǎn
Close in sound todayThe sound part was a clue two thousand years ago — it often still helps, but not always.

反 uses 又 (hand) for meaning and 厂 for sound. Its original shape showed a hand turning its palm over, giving the sense of return or reverse.

Open 反 →

Most characters — around four in five — are built this way: one part hints at the meaning, the other at the pronunciation.

This origin belongs to the traditional form 應; 应 is its simplified writing.

Meaning part形符xíngfú
心心xīnheart
Sound part声符shēngfú
䧹
䧹䧹應yìng
The sound has drifted apartThe sound part was a clue two thousand years ago — it often still helps, but not always.

The traditional form 應 pairs 心 (heart) with 䧹 as a sound part; the simplified 应 is a later shorthand and its parts are not the original components.

Open 应 →
Appears in
Physics & Chemistry

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