18) What is sublimation? How can you separate ammonium chloride from sand?
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In the case of ammonium chloride and sand, ammonium chloride is the sublimate and changes to vapor when heated. This process leaves behind the sand in its natural state. The ammonium chloride vapor is then condensed and reverts back to its solid state, resulting in the effective separation of the two solids.
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sublimation is the transition of a substance directly from the solid to gas state, without passing through the liquid state
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