The test tube is cold. The test tube is warm. The test tube is very hot. The test tube is the same temperature as the air.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Two chemicals are mixed in a test tube and a chemical reaction takes place. If this reaction is endothermic and the test tube is touched, which of the following best describes what is felt?
Possibilities:
- The test tube is cold.
- The test tube is warm.
- The test tube is very hot.
- The test tube is the same temperature as the air.

The test tube is cold.