Answer:
The answer to your question is Endothermic.
Step-by-step explanation:
To know if a reaction is Endothermic or exothermic, most of the time in the reaction is mentioned the energy of the reaction and its sign, from this information we know the kind of reaction.
Also, we can know the kind of reaction by observing that the reactant is a solid and the product is a liquid, that indicates a physical change that needs energy to proceed, so we conclude that the reaction is endothermic.