Considering change of state descriptions, select the name of the change of state for an endothermic change a. condensation b. deposition c. freezing d. Sublimation

Answer 1

An endothermic change means that heat is added to the system, or heat is being absorbed by the system.

a). Condensation is a change from gas to liquid and this gives off heat, so is exothermic

b). deposition is a change from a gas to a solid and this gives off heat, so is exothermic

c). freezing is a change from a liquid to a solid and this gives off heat, so is exothermic

d). sublimation is a change from a solid to a gas and this absorbs heat, so is endothermic

d. Sublimation would be the correct choice