| 1 | 碱 | 鹻 | jiǎn | jian3 | base; alkali; soda (chemistry); variant of 碱 | | |
| 2 | 碱性 | 鹼性 | jiǎn xìng | jian3 xing4 | alkaline | | |
| 3 | 碱化 | 鹼化 | jiǎn huà | jian3 hua4 | to make basic or alkaline; alkalization (chemistry) | | |
| 4 | 皂碱 | 皂鹼 | zào jiǎn | zao4 jian3 | soap; same as 肥皂 | | |
| 5 | 碱土金属 | 鹼土金屬 | jiǎn tǔ jīn shǔ | jian3 tu3 jin1 shu3 | alkaline earth (i.e. beryllium Be 铍 , magnesium Mg 镁 , calcium Ca 钙 , strontium Sr 锶 , barium Ba 钡 and radium Ra 镭 ) | | |
| 6 | 碱土 | 鹼土 | jiǎn tǔ | jian3 tu3 | alkaline soil | | |
| 7 | 碱式盐 | 鹼式鹽 | jiǎn shì yán | jian3 shi4 yan2 | alkali salt (soda, lye, calcium carbonate etc) | | |
| 8 | 碱试法 | 鹼試法 | jiǎn shì fǎ | jian3 shi4 fa3 | alkali test | | |
| 9 | 碱金属 | 鹼金屬 | jiǎn jīn shǔ | jian3 jin1 shu3 | alkali metal | | |
| 10 | 碱基配对 | 鹼基配對 | jiǎn jī pèi duì | jian3 ji1 pei4 dui4 | base pairing (e.g. adenine A 腺嘌呤 pairs with thymine T 胸腺嘧啶 in DNA); base pair | | |
| 11 | 碱基互补配对 | 鹼基互補配對 | jiǎn jī hù bǔ pèi duì | jian3 ji1 hu4 bu3 pei4 dui4 | complementary base pairing e.g. adenine A 腺嘌呤 pairs with thymine T 胸腺嘧啶 in DNA | | |
| 12 | 碱基对 | 鹼基對 | jiǎn jī duì | jian3 ji1 dui4 | base pair (molecular biology) | | |
| 13 | 碱基 | 鹼基 | jiǎn jī | jian3 ji1 | chemical base; nucleobase | | |
| 14 | 碱荒 | 鹼荒 | jiǎn huāng | jian3 huang1 | saline waste land | | |
| 15 | 白碱滩 | 白鹼灘 | bái jiǎn tān | Bai2 jian3 tan1 | Baijiantan District of Karamay City 克拉玛依市 , Xinjiang | | |
| 16 | 碱法纸浆 | 鹼法紙漿 | jiǎn fǎ zhǐ jiāng | jian3 fa3 zhi3 jiang1 | alkali pulp | | |
| 17 | 碱度 | 鹼度 | jiǎn dù | jian3 du4 | alkalinity | | |
| 18 | 碱斑 | 鹼斑 | jiǎn bān | jian3 ban1 | alkali spot | | |
| 19 | 核碱基 | 核鹼基 | hē jiǎn jī | he1 jian3 ji1 | nucleobase | | |
| 20 | 古柯碱 | 古柯鹼 | gǔ kē jiǎn | gu3 ke1 jian3 | cocaine (loanword); also written 可卡因 | | |
| 21 | 番木鳖碱 | 番木鱉鹼 | fān mù biē jiǎn | fan1 mu4 bie1 jian3 | strychnine (C21H22N2O2) | | |
| 22 | 胆碱酯酶 | 膽鹼酯酶 | dǎn jiǎn zhǐ méi | dan3 jian3 zhi3 mei2 | choline esterase (ChE), hydrolyzing enzyme in blood plasma | | |
| 23 | 胆碱 | 膽鹼 | dǎn jiǎn | dan3 jian3 | choline (amine related to vitamin B complex) | | |
| 24 | 纯碱 | 純鹼 | chún jiǎn | chun2 jian3 | sodium carbonate Na2CO3; soda ash; same as 碳酸钠 | | |
| 25 | 茶碱 | 茶鹼 | chá jiǎn | cha2 jian3 | Theophylline | | |