Pennsylvania Cosmetology Practice Exam

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Prepare for the Pennsylvania Cosmetology Exam with study materials featuring flashcards and multiple choice questions. Each question comes with hints and explanations to enhance your understanding. Ace your exam with confidence!

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What is the characteristic of an exothermic reaction?

  1. Requires added heat source

  2. Self cooling

  3. Self heating

  4. Processes faster without heat

The correct answer is: Self heating

An exothermic reaction is a chemical reaction that releases energy in the form of heat. This means that it is self-heating and does not require an added heat source to take place. Option A is incorrect because it is the opposite of what an exothermic reaction does. Option B is incorrect because exothermic reactions do not cool themselves, they heat up. Option D is incorrect because exothermic reactions actually release heat energy, not process faster without heat.

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