氢氧化钠 氫氧化鈉 qīng yǎng huà nà caustic soda / sodium hydroxide NaOH syn 沉淀 沉澱 chén diàn (chemistry) to settle / to precipitate / (chemistry) sediment / precipitate / (fig.) to accumulate syn 氯化钠 氯化鈉 lǜ huà nà sodium chloride NaCl / common salt syn 碳酸钠 碳酸鈉 tàn suān nà soda / sodium carbonate (chemistry) syn 纯碱 純鹼 chún jiǎn sodium carbonate / soda ash / Na2CO3 海波 hǎi bō hypo (loanword) / sodium thiosulfate Na2S2O3 used in fixing photos (formerly hyposulfite) / wave (sea) 硫酸钠 硫酸鈉 liú suān nà sodium sulfate 磷酸钠 磷酸鈉 lín suān nà sodium phosphate (chemistry) 碳酸氢钠 碳酸氫鈉 tàn suān qīng nà sodium bicarbonate 小苏打 小蘇打 xiǎo sū dá baking soda / sodium bicarbonate / Taiwan pr. [xiao3su1da3] 硝酸钠 硝酸鈉 xiāo suān nà sodium nitrate 氰化钠 氰化鈉 qíng huà nà sodium cyanide NaCN 亚硝酸钠 亞硝酸鈉 yà xiāo suān nà sodium nitrite 苯甲酸钠 苯甲酸鈉 běn jiǎ suān nà sodium benzoate, E211 (a food preservative) 氯酸钠 氯酸鈉 lǜ suān nà sodium chlorate NaClO3 次 cì next in sequence / second / the second (day, time etc) / secondary / vice- / sub- / infra- / inferior quality / substandard / order / sequence / hypo- (chemistry) / classifier for enumerated events: time syn 新 xīn new / newly / meso- (chemistry) syn 根 gēn root / basis / classifier for long slender objects, e.g. cigarettes, guitar strings / CL:條|条[tiao2] / radical (chemistry) syn 基 jī (bound form) base / foundation / (bound form) radical (chemistry) / (bound form) gay (loanword from English into Cantonese, Jyutping: gei1, followed by orthographic borrowing from Cantonese) syn 化学 化學 huà xué chemistry / chemical syn 价 價 jià price / value / (chemistry) valence syn 取代 qǔ dài to replace / to supersede / to supplant / (chemistry) substitution syn 元素 yuán sù element (key component of sth) / (chemistry) element / (math.) element (member of a set) syn 澄清 dèng qīng to settle (of liquid) / to become clear (by precipitation of impurities) / precipitate (chemistry) / to put in order / to quell disturbances syn 活泼 活潑 huó po lively / vivacious / brisk / active / (chemistry) reactive syn 摩尔 摩爾 mó ěr mole (chemistry) 渗透 滲透 shèn tòu (lit. and fig.) to permeate / to seep into / (of a product, idea etc) to penetrate (in a population) / (of hostile forces) to infiltrate / (chemistry) osmosis syn 转化 轉化 zhuǎn huà to change / to turn / to convert / (genetics) to transform / (chemistry) isomerization syn 还原 還原 huán yuán to restore to the original state / to reconstruct (an event) / reduction (chemistry) syn 母体 母體 mǔ tǐ (zoology, medicine) mother's body / (chemistry etc) parent / matrix / (statistics) population / parent population 活性 huó xìng (chemistry) activity / active / activated 甲基 jiǎ jī methyl group (chemistry) 溶液 róng yè solution (chemistry) 诱导 誘導 yòu dǎo to induce / to encourage / to provide guidance / (medicine, chemistry) to induce syn 微量元素 wēi liàng yuán sù trace element (chemistry) 两性 兩性 liǎng xìng male and female / both types (acid and alkaline, positive and negative etc) / (chemistry) amphoteric 聚合 jù hé to come together (to form sth) / to assemble together / (chemistry) to polymerize syn 降解 jiàng jiě (chemistry) degradation / to degrade 中和 zhōng hé to neutralize / to counteract / neutralization (chemistry) syn 亲和力 親和力 qīn hé lì (personal) warmth / approachability / accessibility / (in a product) user friendliness / (chemistry) affinity 载体 載體 zài tǐ carrier (chemistry) / vector (epidemiology) / vehicle or medium 单体 單體 dān tǐ monomer (chemistry) 试纸 試紙 shì zhǐ (chemistry, medicine) test strip 重水 zhòng shuǐ heavy water (chemistry) 吸附 xī fù to adhere to a surface / to absorb / to draw in / (fig.) to attract / (chemistry) adsorption syn 有机化学 有機化學 yǒu jī huà xué organic chemistry syn 化学系 化學系 huà xué xì department of chemistry 氟利昂 fú lì áng freon (chemistry) syn 惰性 duò xìng inert (chemistry) / apathy / inertia / laziness 无机 無機 wú jī inorganic (chemistry) 燃点 燃點 rán diǎn to ignite / to set fire to / to light / (chemistry) ignition point / combustion point syn 卤素 鹵素 lǔ sù halogen (chemistry) 稀土 xī tǔ rare earth (chemistry) 环氧树脂 環氧樹脂 huán yǎng shù zhī epoxy resin (chemistry) 制备 製備 zhì bèi to prepare / preparation (chemistry) syn 非金属 非金屬 fēi jīn shǔ nonmetal (chemistry) 糖类 糖類 táng lèi sugar (chemistry) syn 基团 基團 jī tuán radical (chemistry) 碳酸盐 碳酸鹽 tàn suān yán carbonate salt (chemistry) 理化 lǐ huà physics and chemistry / (archaic) governance and education syn 炼制 煉制 liàn zhì (chemistry) to refine syn 物理化学 物理化學 wù lǐ huà xué physical chemistry 大分子 dà fēn zǐ macromolecule (chemistry) 透析 tòu xī to analyze in depth / dialysis / (chemistry) to dialyze / (medicine) to undergo dialysis treatment 萃取 cuì qǔ (chemistry) liquid-liquid extraction (aka solvent extraction) / to extract 无水 無水 wú shuǐ anhydrous (chemistry) / waterless / dehydrated 酰胺 xiān àn amide / acidamide (chemistry) 乙酰 yǐ xiān acetyl (chemistry) 活性剂 活性劑 huó xìng jì reagent (chemistry) 单键 單鍵 dān jiàn single bond (chemistry) 制取 zhì qǔ (chemistry) to produce 乙基 yǐ jī ethyl group (chemistry) 数理化 數理化 shù lǐ huà abbr. for mathematics 數學|数学[shu4 xue2], physics 物理[wu4 li3] and chemistry 化學|化学[hua4 xue2] 反渗透 反滲透 fǎn shèn tòu anti-infiltration (measures taken against subversive external forces) / (chemistry) reverse osmosis 裂解 liè jiě pyrolysis / splitting (chemistry) syn 分析化学 分析化學 fēn xī huà xué analytical chemistry 丁基 dīng jī butyl group (chemistry) 闪点 閃點 shǎn diǎn flash point (chemistry) 异构 異構 yì gòu isomeric (chemistry) 无机化学 無機化學 wú jī huà xué inorganic chemistry 咪唑 mī zuò imidazole (chemistry) (loanword) 硝基苯 xiāo jī běn nitrobenzene / benzoil nitrate (chemistry) 过氧 過氧 guò yǎng peroxy- / peroxide (chemistry) 辅酶 輔酶 fǔ méi coenzyme (chemistry) 丙基 bǐng jī propyl group (chemistry) 烯烃 烯烴 xī tīng olefine / alkene (chemistry) 结构式 結構式 jié gòu shì structural formula (chemistry) 盐酸盐 鹽酸鹽 yán suān yán chloride / hydrochloride (chemistry) 乙烯基 yǐ xī jī vinyl / vinyl group (chemistry) 红铜 紅銅 hóng tóng copper (chemistry) / see also 銅|铜[tong2] syn 手性 shǒu xìng chiral / chirality (chemistry) 胶状 膠狀 jiāo zhuàng gluey / gelatinous / colloid (chemistry) 共轭 共軛 gòng è (math., physics, chemistry) to be conjugate 硫醇 liú chún thiol (chemistry) 构型 構型 gòu xíng structure / (spatial) configuration / arrangement / (chemistry) configuration (molecular, electron etc) 双键 雙鍵 shuāng jiàn double bond (chemistry) 甲胺磷 jiǎ àn lín methamidophos (chemistry) 噻唑 sāi zuò thiazole (chemistry) 甾醇 zāi chún sterol (chemistry) 