The ammonia test

The ammonia test

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Credit: MARTYN F. CHILLMAID/SCIENCE PHOTO LIBRARY

Caption: The ammonia test. There is no visible vapour from the ammonia in the test tube until a glass stirrer dipped in hydrochloric acid is put close by. As the vapours combine a visible smoke of ammonium hydroxide is formed. A droplet of hydrochloric acid has fallen into the tube and vaporised into a doughnut cloud.

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Keywords: acid, alkaline solution, ammonia, ammonia chloride, ammonia test, ammonium hydroxide, blue background, chemical, chemistry, diffusion, experiment, glass stirrer, hydrochloric acid, no-one, nobody, pungent, school science, science education, smoke, test tube, vapor, vapour, volatile

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