Is a sponge Exothermic or Endothermic?

Answer 1

A sponge itself is neither exothermic nor endothermic; these terms refer to chemical reactions or processes that either release or absorb heat. However, when a sponge absorbs water, this process can be considered endothermic because it requires energy to break the bonds between water molecules. In contrast, when a sponge dries out, the release of moisture could be seen as exothermic, as it involves the release of energy.