Chemistry
Grade-10
Easy
Question
A hot pack is a product that releases heat when chemicals inside of it interact. What is taking place inside an active hot pack?
- Electric current
- A net loss of mass
- An exothermic reaction
- Thermal insulation
Hint:
A chemical reaction is a process in which one or more substances are converted to more different substances. Substances may be either chemical elements or compounds. Some reactions may involve energy changes, like absorption of heat energy, etc.
The correct answer is: An exothermic reaction
A hot pack is a product that releases heat when chemicals inside it interact. An exothermic reaction is taking place inside an active hot pack.
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