examples of what is considered endothermic or exothermic
Melting (solid to liquid)
endothermic
Boiling (liquid to gas)
endothermic
Evaporation (liquid to gas)
endothermic
Freezing (liquid to solid)
exothermic
Condensation (gas to liquid)
exothermic
Combustion reactions
exothermic
Dissolving salts
endothermic