universal indicator solution demonstration, showing colour changes. universal indicator turns red in acids, purple in alkalis, and green-yellow in neutral water - 氫氧化鈉 個影片檔及 b 捲影像00:36
iron (ii) hydroxide precipitate, formed as sodium hydroxide is dripped into iron (ii) chloride solution - 氫氧化鈉 個影片檔及 b 捲影像00:18
iron (iii) hydroxide precipitate, formed as sodium hydroxide is dripped into iron (iii) chloride solution - 氫氧化鈉 個影片檔及 b 捲影像00:16
universal indicator paper being dipped in sodium hydroxide, a strong alkali. universal indicator turns purple in the presence of alkalis - 氫氧化鈉 個影片檔及 b 捲影像00:09
universal indicator solution added to sodium hydroxide solution, a strong alkali. the indicator turns purple in alkalis - 氫氧化鈉 個影片檔及 b 捲影像00:11
retailers sign up to voluntary ban on selling corrosive substances to under-18s; england: london:ext'rose diy' shop sign and windowreporter entering... - 氫氧化鈉 個影片檔及 b 捲影像00:47
train carrying hazardous chemicals like sodium hydroxide and liquified petroleum gas derails in a densely populated urban area of washington dc - 氫氧化鈉 個影片檔及 b 捲影像02:59美國
rollers rotating or spinning in chemical (sodium hydroxide) treated water in tanks in the textile industry. - 氫氧化鈉 個影片檔及 b 捲影像00:13
defines solutions in terms of solutes and solvents. depicts some common types of solutions and presents factors which influence solubility, including... - 氫氧化鈉 個影片檔及 b 捲影像00:40
shows the identifying characteristics of ions and where they occur. electrolytes, dissociation, solvents, electrovalent compounds and covalent... - 氫氧化鈉 個影片檔及 b 捲影像00:28
sodium is the sixth most abundant element in the earth's crust and exists in numerous minerals such as table salt and is an essential element for... - 氫氧化鈉 個影片檔及 b 捲影像00:28
copper (ii) hydroxide precipitate, formed as sodium hydroxide is dripped into copper (ii) sulphate solution - 氫氧化鈉 個影片檔及 b 捲影像00:14
universal indicator solution demonstration, showing colour changes. universal indicator turns red in acids, purple in alkalis, and green-yellow in neutral water - 氫氧化鈉 個影片檔及 b 捲影像00:35