When iodine is heated what gas is evolved? When solid iodine is heated it sublimes and becomes a purple vapour. (See heating chemicals). Subliming is a physical change that describes what happens when a solid turns into a gas when … Continue reading →
Examples of acids and alkalis (see acids and alkalis) Strong acids: Hydrochloric acid, sulfuric acid, nitric acid Weak acids: Citric acid, found in lemon and lime juice; Ethanoic (acetic) acid, found in vinegar. Strong alkalis: Sodium hydroxide (caustic soda), found … Continue reading →
Does copper carbonate sublime? No. Copper carbonate will decompose (split apart) when heated releasing carbon dioxide gas and leaving copper oxide (a black powder). Colour change: Green to black. (See heating chemicals). Chemicals that do sublime include iodine and dry … Continue reading →
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