Which observation shows that a chemical reaction is exothermic?
Answer and explanation
Correct answer: The container becomes hot
In an exothermic reaction, heat is released from the reacting system to the surroundings. Therefore, the temperature of the reaction container may rise and it feels hot. In contrast, a container becoming cold can indicate an endothermic reaction, in which heat is absorbed from the surroundings.
Frequently asked questions
What is the correct answer to this question?
The container becomes hot
Why is this the correct answer?
In an exothermic reaction, heat is released from the reacting system to the surroundings. Therefore, the temperature of the reaction container may rise and it feels hot. In contrast, a container becoming cold can indicate an endothermic reaction, in which heat is absorbed from the surroundings.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Chemical Reactions and Equations.
