<h3><em>Answer:</em></h3><h3><em>Melting ice cubes.</em></h3><h3><em>Melting solid salts.</em></h3><h3><em>Evaporating liquid water.</em></h3><h3><em>Converting frost to water vapor (melting, boiling, and evaporation, in general, are endothermic processes.</em></h3><h3><em>Making an anhydrous salt from a hydrate.</em></h3><h3><em>Forming a cation from an atom in the gas phase.</em></h3><h3><em>Splitting a gas molecule.</em></h3>
