Why does the sublimation of ammonium chloride involve both physical and chemical changes?
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Ammonium chloride decomposes into ammonia and hydrochloric acid at its sublimation temperature. Answer: Sublimation of ammonium chloride is a chemical change because during the process, two new substances are formed. ... Moreover ammonium chloride is a white solid while the two products are gases.
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Sublimation is a physical change
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