Answer: Rubbing alcohol feels cold on the skin (The alcohol is the system) is an endothermic process.
Explanation:
A chemical reaction in which heat is absorbed is known as endothermic reaction. For example, melting of ice is an endothermic reaction.
A chemical reaction in which heat is released is known as an exothermic reaction. For example, burning of a match stick.
When a molten metal solidifies then it means its molecules are coming closer to each other by releasing energy. Hence, it is an exothermic process.
When we rub alcohol on our skin then it actually absorbs the heat of our body due to which it readily evaporates. Hence, rubbing alcohol on skin is an endothermic process.
Therefore, we can conclude that rubbing alcohol feels cold on the skin (The alcohol is the system) is an endothermic process.
Rubbing alcohol feels cold on the skin (The alcohol is the system) is an
example of endothermic process.
Endothermic process involves the absorption of heat by the body from its
surroundings while exothermic reaction involves the release of heat to the
surroundings.
The alcohol acts as the body(system) and absorbs the heat from the
surroundings(skin) which then brings about a cooling sensation which is felt
on the body.
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