If the reaction vessel becomes very cold during a chemical reaction, what is the correct conclusion about the energy change?
Answer and explanation
Correct answer: The reaction has absorbed heat from the surroundings.
A cold reaction vessel indicates that the reaction is absorbing heat from the vessel and the surrounding environment. Such a reaction is endothermic, so option A is correct. Option B represents an exothermic reaction, in which heat is released to the surroundings and the vessel or surroundings generally become warmer.
Frequently asked questions
What is the correct answer to this question?
The reaction has absorbed heat from the surroundings.
Why is this the correct answer?
A cold reaction vessel indicates that the reaction is absorbing heat from the vessel and the surrounding environment. Such a reaction is endothermic, so option A is correct. Option B represents an exothermic reaction, in which heat is released to the surroundings and the vessel or surroundings generally become warmer.
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.
