分子式 (fēn zǐ shì) — (chemistry) molecular formula

Definition

noun
(chemistry) molecular formula

Examples

  • 分子式H₂O
    Shuǐ de fēn zǐ shì shì H₂O.
    The molecular formula of water is H₂O.
  • 分子式
    Zhè dào tí yāo qiú xiě chū pú tao táng de fēn zǐ shì.
    This question requires writing the molecular formula of glucose.
  • 分子式
    Huà xué lǎo shī ràng wǒ men jì zhù èr yǎng huà tàn de fēn zǐ shì.
    The chemistry teacher asked us to memorize the molecular formula of carbon dioxide.

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.

分子molecule
fēnpartsuffix
shìformula

分子 means molecule and 式 means formula, so together they name a molecular formula.

Characters in this word

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

分 pairs 八 (to separate) with 刀 (knife), showing something cut apart with a knife.

Open 分 →

A drawing of the thing itself, worn down over three thousand years into a few strokes.

子 is drawn as a baby with a large head, arms stretched out, and legs wrapped in a blanket.

Open 子 →

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
gōngwork
Sound part声符shēngfú
shì
The sound has drifted apartThe sound part was a clue two thousand years ago — it often still helps, but not always.

式 pairs 工, meaning work, with 弋, which gives the sound.

Open 式 →

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