| 1 | 氢 | 氫 | qīng | qing1 | hydrogen (chemistry) | | |
| 2 | 氢气 | 氫氣 | qīng qì | qing1 qi4 | hydrogen (gas) | | |
| 3 | 氢原子 | 氫原子 | qīng yuán zǐ | qing1 yuan2 zi3 | hydrogen atom | | |
| 4 | 氢氧化钠 | 氫氧化鈉 | qīng yǎng huà nà | qing1 yang3 hua4 na4 | caustic soda; sodium hydroxide NaOH | | |
| 5 | 氢弹 | 氫彈 | qīng dàn | qing1 dan4 | H-bomb; hydrogen bomb | | |
| 6 | 氢原子核 | 氫原子核 | qīng yuán zǐ hé | qing1 yuan2 zi3 he2 | hydrogen nucleus | | |
| 7 | 氢氧离子 | 氫氧離子 | qīng yǎng lí zǐ | qing1 yang3 li2 zi3 | hydroxide ion OH- | | |
| 8 | 氢氧化物 | 氫氧化物 | qīng yǎng huà wù | qing1 yang3 hua4 wu4 | hydroxide | | |
| 9 | 氢氧化镁 | 氫氧化鎂 | qīng yǎng huà měi | qing1 yang3 hua4 mei3 | magnesium hydroxide Mg(OH)2 | | |
| 10 | 氢氧化铝 | 氫氧化鋁 | qīng yǎng huà lǚ | qing1 yang3 hua4 lu:3 | aluminum hydroxide | | |
| 11 | 氢氧化钾 | 氫氧化鉀 | qīng yǎng huà jiǎ | qing1 yang3 hua4 jia3 | potassium hydroxide | | |
| 12 | 氢氧化钙 | 氫氧化鈣 | qīng yǎng huà gài | qing1 yang3 hua4 gai4 | calcium hydroxide Ca(OH)2; slaked lime | | |
| 13 | 氢氧化 | 氫氧化 | qīng yǎng huà | qing1 yang3 hua4 | hydroxide (e.g. caustic soda NaOH) | | |
| 14 | 氢氧根离子 | 氫氧根離子 | qīng yǎng gēn lí zǐ | qing1 yang3 gen1 li2 zi3 | hydroxide ion OH- | | |
| 15 | 氢氧根 | 氫氧根 | qīng yǎng gēn | qing1 yang3 gen1 | hydroxide radical (-OH) | | |
| 16 | 氢氧 | 氫氧 | qīng yǎng | qing1 yang3 | hydroxide (e.g. caustic soda NaOH) | | |
| 17 | 氢溴酸 | 氫溴酸 | qīng xiù suān | qing1 xiu4 suan1 | hydrobromic acid HBr | | |
| 18 | 氢气球 | 氫氣球 | qīng qì qiú | qing1 qi4 qiu2 | Hydrogen balloons | | |
| 19 | 氢酶 | 氫酶 | qīng méi | qing1 mei2 | hydrogenase (enzyme) | | |
| 20 | 氢卤酸 | 氫鹵酸 | qīng lǔ suān | qing1 lu3 suan1 | hydrohalic acid (e.g. hydrofluoric acid HF 氢氟酸 , hydrochloric acid HCl 盐酸 etc) | | |
| 21 | 氢氯酸 | 氫氯酸 | qīng lǜ suān | qing1 lu:4 suan1 | hydrochloric acid HCl; also written 盐酸 | | |
| 22 | 氢净合成油 | 氫淨合成油 | qīng jìng hé chéng yóu | qing1 jing4 he2 cheng2 you2 | hydrogenated oil | | |
| 23 | 氢键 | 氫鍵 | qīng jiàn | qing1 jian4 | hydrogen bond | | |
| 24 | 氢化氰 | 氫化氰 | qīng huà qíng | qing1 hua4 qing2 | hydrocyanic acid; hydrogen cyanide | | |
| 25 | 氢化 | 氫化 | qīng huà | qing1 hua4 | hydrogenation | | |