洗碗块里除了表面活性剂，为什么要加沸石和磷酸盐类助剂？
Why do dishwasher tablets add zeolites and phosphate builders beyond surfactants?
助剂能软化硬水、绑定钙镁离子并维持碱性，让表面活性剂专心去油污，还防止水垢再沉积。
Builders soften hard water, bind calcium and magnesium, and keep the wash alkaline so surfactants focus on grease and prevent scale redeposit.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Theodore Gray,《Molecules: The Elements and the Architecture of Everything》,Black Dog & Leventhal,2014
Theodore Gray, Molecules, Black Dog & Leventhal, 2014
独立核验依据 · Independent verification: 核验依据 2 ISBN 9780665590955 (2002)
#洗涤剂 #助剂 #硬水
管道疏通剂为什么能溶掉堵塞的头发和油污？
Why do drain cleaners dissolve hair and grease clogs?
多数疏通剂含氢氧化钠，强碱能把油脂皂化、把头发里的角蛋白水解，从而打通管道（使用时很危险，会放热）。
Most contain sodium hydroxide; the strong base saponifies grease and hydrolyzes keratin in hair (it also releases heat, so handle with care).
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Theodore Gray,《Molecules: The Elements and the Architecture of Everything》,Black Dog & Leventhal,2014
Theodore Gray, Molecules, Black Dog & Leventhal, 2014
独立核验依据 · Independent verification: 核验依据 2 ISBN 9780665590955 (2002)
#疏通剂 #氢氧化钠 #皂化
为什么肥皂在硬水里洗不干净还起垢？
Why does soap clean poorly and leave scum in hard water?
硬水中的钙、镁离子与肥皂反应生成不溶的钙皂沉淀(浮渣)，既浪费肥皂又在器具上留垢。
Calcium and magnesium in hard water form insoluble calcium-soap precipitates (scum) that waste soap and leave deposits.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Theodore Gray,《Molecules: The Elements and the Architecture of Everything》,Black Dog & Leventhal,2014
Theodore Gray, Molecules, Black Dog & Leventhal, 2014
独立核验依据 · Independent verification: 核验依据 2 ISBN 9780665590955 (2002)
#肥皂 #硬水 #浮渣
为什么肥皂在硬水中不好用，而合成洗衣粉却可以？
Why does soap work poorly in hard water while synthetic detergents work well?
硬水中含较多钙镁离子，肥皂的脂肪酸根会与Ca2+、Mg2+生成不溶的脂肪酸钙镁沉淀（浮渣），既浪费肥皂又降低去污力。合成洗涤剂改用磺酸根等亲水基，其钙镁盐可溶于水，因此在硬水中仍能正常起泡去污。
Hard water contains Ca2+ and Mg2+, which react with soap's fatty-acid anions to form insoluble calcium and magnesium soaps (scum), wasting soap and cutting its cleaning power. Synthetic detergents use sulfonate-type hydrophilic heads whose calcium and magnesium salts are soluble, so they still foam and clean in hard water.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-11-02
来源 · Source
《普通化学》(Atkins) 表面活性剂章节
General Chemistry (Atkins), surfactants; Royal Society of Chemistry
独立核验依据 · Independent verification: 核验依据 1 OPENLIBRARY 标识 /works/OL8206954W：General Chemistry Ise A
#硬水 #肥皂 #合成洗涤剂
为什么70%酒精比纯酒精消毒更好？
Why is 70% alcohol better at disinfecting than pure alcohol?
纯酒精太快使细菌表面蛋白凝固成膜，反而挡住渗入；70%左右渗透性好，能使蛋白充分变性杀灭微生物。
Pure alcohol coagulates surface proteins too fast, blocking penetration; ~70% penetrates well and denatures proteins thoroughly.
难度 进阶 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Theodore Gray,《Molecules: The Elements and the Architecture of Everything》,Black Dog & Leventhal,2014
Theodore Gray, Molecules, Black Dog & Leventhal, 2014
独立核验依据 · Independent verification: 核验依据 2 ISBN 9780665590955 (2002)
#酒精 #消毒 #蛋白质变性
现代洗衣液里为什么要加酶？
Why do modern detergents add enzymes?
蛋白酶、脂肪酶等能把血渍、油渍等大分子污物分解成小分子，低温下也能洗得更干净。
Proteases and lipases break big stains like blood and grease into small molecules, cleaning well even at low temperatures.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Theodore Gray,《Molecules: The Elements and the Architecture of Everything》,Black Dog & Leventhal,2014
Theodore Gray, Molecules, Black Dog & Leventhal, 2014
独立核验依据 · Independent verification: 核验依据 2 ISBN 9780665590955 (2002)
#洗衣 #酶 #去污
为什么洗头时洗发水会起很多泡沫？
Why does shampoo make lots of foam when we wash hair?
洗发水里有能让水变滑的物质，揉一揉就把空气变成许多小泡泡。
Shampoo has stuff that traps air when rubbed, making lots of little foam bubbles.
难度 入门 · 适合 幼儿(3-6)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
Brown, LeMay 等,《Chemistry: The Central Science》第14版,Pearson,2017
T. L. Brown et al., Chemistry: The Central Science, 14th ed., Pearson, 2017
#洗发水 #泡沫 #清洁
为什么古人用草木灰就能洗衣服？
Why could ancients wash clothes with plant ash?
草木灰含碳酸钾，溶于水呈碱性，能皂化衣物上的油脂去污，是古代重要的天然碱源，也用于制碱制皂。
Plant ash contains potassium carbonate; its alkaline solution saponifies oils on cloth, an ancient natural source of alkali for washing and soap-making.
难度 入门 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
Theodore Gray,《Molecules: The Elements and the Architecture of Everything》,Black Dog & Leventhal,2014
Theodore Gray, Molecules, Black Dog & Leventhal, 2014
独立核验依据 · Independent verification: 核验依据 2 ISBN 9780665590955 (2002)
#草木灰 #碱 #洗涤
为什么用肥皂水能吹出泡泡？
Why can soapy water make bubbles?
肥皂水有一层薄薄的小皮，把空气包在里面，就变成了圆圆的泡泡。
Soapy water makes a thin skin that traps air inside, forming round bubbles.
难度 入门 · 适合 幼儿(3-6)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
Brown, LeMay 等,《Chemistry: The Central Science》第14版,Pearson,2017
T. L. Brown et al., Chemistry: The Central Science, 14th ed., Pearson, 2017
#肥皂 #泡泡 #清洁
为什么油和水倒在一起会分开，不变成一团？
Why do oil and water separate instead of mixing?
水和油是两种不一样的液体，油比水轻，所以会浮在水面上，它们互相不拉手。因为油不爱和水混在一起，用力摇晃也只会暂时变成小油滴，很快又分开。
Water and oil are different liquids; oil is lighter, so it floats on top and the two do not mix. Oil avoids water, so even shaking them only makes tiny oil drops that soon separate again.
难度 入门 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
Brown, LeMay 等,《Chemistry: The Central Science》第14版,Pearson,2017
T. L. Brown et al., Chemistry: The Central Science, 14th ed., Pearson, 2017
#油 #水 #混合
洗发水里的表面活性剂怎么去油？
How do surfactants in shampoo remove oil?
它们一端亲水、一端亲油，把油污乳化成小液滴随水冲走；SLES 通常比 SLS 更温和。
One end is hydrophilic, the other lipophilic, so they emulsify grease into tiny droplets washed away by water; SLES is usually milder than SLS.
难度 入门 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
Brown, LeMay 等,《Chemistry: The Central Science》第14版,Pearson,2017
T. L. Brown et al., Chemistry: The Central Science, 14th ed., Pearson, 2017
#表面活性剂 #洗发水 #乳化
为什么刷牙时牙膏会冒出白白的泡沫？
Why does toothpaste make white foam when we brush?
牙膏里有会起泡的东西，刷牙时把空气包住，变成软软的小泡泡。
Toothpaste has foaming stuff that traps air while brushing, making soft little bubbles.
难度 入门 · 适合 幼儿(3-6)
CC BY 4.0 · 已核验 · Verified 2026-08-23
来源 · Source
Brown, LeMay 等,《Chemistry: The Central Science》第14版,Pearson,2017
T. L. Brown et al., Chemistry: The Central Science, 14th ed., Pearson, 2017
#牙膏 #泡沫 #清洁