Answer
Heat is absorbed during an endothermic process and released during an exothermic process.
(a): Ice melts: Endothermic as ice absorbs heat to melt
(b): Gasoline burns: Exothermic as heat is produced
(c): steam condenses: Exothermic as heat is released
(d): Since enthalpy is negative, it implies heat is released from the system. Hence, it is exothermic.
Work Step by Step
Heat is absorbed during an endothermic process and released during an exothermic process.
(a): Ice melts: Endothermic as ice absorbs heat to melt
(b): Gasoline burns: Exothermic as heat is produced
(c): steam condenses: Exothermic as heat is released
(d): Since enthalpy is negative, it implies heat is released from the system. Hence, it is exothermic.
