Gaseous water particles coming together to form fog is an exothermic change due to release of thermal energy.
What is exothermic change?
An exothermic reaction is defined as a reaction that releases heat energy to the surrounding environment. It include any combustion process, rusting of iron, and freezing of water.
In conclusion, we can say that Gaseous water particles coming together to form fog is an exothermic change due to release of thermal energy.
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