| 1 | 硫酸 | 硫酸 | liú suān | liu2 suan1 | sulfuric acid H2SO4; sulfate | | |
| 2 | 酸 | 酸 | suān | suan1 | sour; tart; sick at heart; grieved; sore; aching; pedantic; impractical; to make sarcastic remarks about sb; an acid | | |
| 3 | 盐酸 | 鹽酸 | yán suān | yan2 suan1 | hydrochloric acid HCl | | |
| 4 | 硝酸 | 硝酸 | xiāo suān | xiao1 suan1 | nitric acid | | |
| 5 | 氨基酸 | 氨基酸 | ān jī suān | an1 ji1 suan1 | amino acid | | |
| 6 | 酸性 | 酸性 | suān xìng | suan1 xing4 | acidity | | |
| 7 | 硝酸钾 | 硝酸鉀 | xiāo suān jiǎ | xiao1 suan1 jia3 | potassium nitrate | | |
| 8 | 磷酸 | 磷酸 | lín suān | lin2 suan1 | phosphoric acid | | |
| 9 | 核酸 | 核酸 | hé suān | he2 suan1 | nucleic acid; RNA or DNA | | |
| 10 | 碳酸钠 | 碳酸鈉 | tàn suān nà | tan4 suan1 na4 | soda; sodium carbonate (chemistry) | | |
| 11 | 脂肪酸 | 脂肪酸 | zhī fáng suān | zhi1 fang2 suan1 | fatty acid | | |
| 12 | 硫酸铜 | 硫酸銅 | liú suān tóng | liu2 suan1 tong2 | copper sulfate CuSO4 | | |
| 13 | 乙酸 | 乙酸 | yǐ suān | yi3 suan1 | formic acid; acetic acid (CH3COOH); ethanoic acid | | |
| 14 | 氯酸钾 | 氯酸鉀 | lǜ suān jiǎ | lu:4 suan1 jia3 | potassium chlorate | | |
| 15 | 碳酸钙 | 碳酸鈣 | tàn suān gài | tan4 suan1 gai4 | calcium carbonate | | |
| 16 | 碳酸 | 碳酸 | tàn suān | tan4 suan1 | carbonic acid; carbonate | | |
| 17 | 对羟基苯甲酸酯 | 對羥基苯甲酸酯 | duì qiǎng jī běn jiǎ suān zhǐ | dui4 qiang3 ji1 ben3 jia3 suan1 zhi3 | paraben (chemistry) | | |
| 18 | 酸民 | 酸民 | suān mín | suan1 min2 | (Tw) (Internet) troll | | |
| 19 | 邻苯二甲酸酯 | 鄰苯二甲酸酯 | lín běn èr jiǎ suān zhǐ | lin2 ben3 er4 jia3 suan1 zhi3 | phthalate (chemistry) | | |
| 20 | 酸儿辣女 | 酸兒辣女 | suān ér là nǚ | suan1 er2 la4 nu:3 | if a woman likes to eat sour during pregnancy, she will have a boy; if she likes to eat spicy, she will have a girl (idiom) | | |
| 21 | 油酸 | 油酸 | yóu suān | you2 suan1 | oleic acid | | |
| 22 | 倍尝辛酸 | 倍嘗辛酸 | bèi cháng xīn suān | bei4 chang2 xin1 suan1 | to have been through a hard time (idiom) | | |
| 23 | 丙烯酸 | 丙烯酸 | bǐng xī suān | bing3 xi1 suan1 | acrylic acid C3H4O2 | | |
| 24 | 悲酸 | 悲酸 | bēi suān | bei1 suan1 | bitter and sad | | |
| 25 | 组氨酸 | 組氨酸 | zǔ ān suān | zu3 an1 suan1 | histidine (His), an essential amino acid | | |