Question

Which evidence provided BEST supports the statement that cold packs use endothermic reactions to cool objects?


The initial temperature in Test 4 was the same and the final temperature.


The initial temperatures for Tests 1, 2, and 3 were lower than the final temperatures in the tests.


The initial temperatures for Tests 1, 2, and 3 were higher than the final temperatures in the tests.


The initial temperature and the final temperature for Test 3 were both positive numbers.

Answer 1

"The initial temperatures for Tests 1, 2, and 3 were higher than the final temperatures in the tests."

This shows the temperature dropped (heat was absorbed), which is evidence of an endothermic process.