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7-9
二氧化碳

carbon dioxide

Character Composition

Characters

Pinyin

er4yang3hua4tan4 • èryǎnghuàtàn

Meaning

Primary

carbon dioxide

Alternatives

CO2

Mnemonic

If you take 二 two 氧 oxygen atoms and connect them to a 碳 carbon atom, they will 化 transform into 二氧化碳 carbon dioxide.

Usage

二氧化碳 排放

carbon dioxide emissions

人類 呼出 二氧化碳。

Humans exhale carbon dioxide.