Question

When ammonium nitrate is dissolved in water in a flask, the flask becomes cold. Is this an endothermic or exothermic reaction? How do you know?(1 point)
Responses

It is endothermic; heat energy has been removed from the surroundings, making the flask cold.
It is endothermic; heat energy has been removed from the surroundings, making the flask cold.

It is endothermic; heat energy has been released to the air, leaving the products cold.
It is endothermic; heat energy has been released to the air, leaving the products cold.

It is exothermic; heat energy has been released to the air, leaving the products cold.
It is exothermic; heat energy has been released to the air, leaving the products cold.

It is exothermic; heat energy has been removed from the surroundings, making the flask cold.

Answers

GPT-4o mini
The correct response is:

**It is endothermic; heat energy has been removed from the surroundings, making the flask cold.**

In an endothermic reaction, the system absorbs heat from its surroundings, which can result in a temperature drop, making the surroundings (like the flask) feel cold. In the case of ammonium nitrate dissolving in water, the process absorbs heat, leading to the cooling effect observed.