| 酸 | 초 산, tart, sour; acid; stiff; spoiled (14) |
| 氷醋酸 | 빙초산 | glacial acetic acid |
| 酸性 | 산성 | acidity |
| 酸素 | 산소 | oxygen |
| 酸敗 | 산패 | acidification |
| 酸化 | 산화 | oxidation |
| 石炭酸 | 석탄산 | carbolic acid |
| 石炭酸 | 석탄산 | phenol |
| 蓚酸 | 수산 | oxalic acid |
| 亞燐酸 | 아인산 | phosphoric acid |
| 鹽酸 | 염산 | hydrochloric acid |
| 乳酸 | 유산 | lactic acid |
| 一酸化炭素 | 일산화탄소 | carbon monoxide |
| 靑酸 | 청산 | hydrocyanic acid |
| 醋酸 | 초산 | acetic acid |
| 炭酸 | 탄산 | carbonic acid |