Question

Name 3 chemical reaction in which heat is evolved and 3 chemical reaction in which heat is absorbed

Answer 1

Examples of Exothermic Reactions(heatis evolved)

• any combustion reaction.
• a neutralization reaction.
• rusting of iron (rust steel wool with vinegar)

These examples could be written as chemical reactions, but are more generally considered to be endothermic or heat-absorbing processes:

• melting ice cubes.
• melting solid salts.
• evaporating liquid water.
• converting frost to water vapor (melting, boiling, and evaporation, in general, are endothermic processes)