Poitive ammonia test

Poitive ammonia test

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This image is part of the sequence Science and technology: Ammonia test

Credit: MARTYN F. CHILLMAID/SCIENCE PHOTO LIBRARY

Caption: Positive 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.

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

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