Subject - General Chemistry

Exothermic reactions proceed with release of heat (the opposite is endothermic). Accordingly, the reaction shows a negative reaction enthalpy or phase transfer enthalpy.

Examples for exothermic reactions or phase transfers:

• Solidification of melt
• Condensation of steam
• Burning of coal to carbon dioxide
• Oxyhydrogen reaction
• Hydration of lime

See also: endothermic