分子

分子 (fèn zǐ) is a noun meaning 'molecule' in the context of chemistry. It refers to the smallest unit of a substance that retains all the chemical properties of that substance.

The character 分 (fēn) originally meant 'to divide' or 'part,' and 子 (zǐ) means 'child' or 'small object.' Together, they form a term that literally translates to 'small part,' which aligns with the scientific concept of a molecule as a small particle made up of atoms.

In daily usage, 分子 is primarily used in scientific contexts. It is essential in chemistry and physics education, and it may also appear in discussions about molecular structures or chemical reactions. Understanding this term is crucial for students studying science in Chinese.