Figuring out if a reaction is endothermic or exothermic can be tricky. This is because of things like temperature changes and mistakes during experiments.

Here’s a simple breakdown:

1. Temperature Change:

   • Exothermic reactions let out heat, making the surrounding area warmer.
   • Endothermic reactions soak up heat, which makes the temperature drop.

2. Measuring Heat:

   • We can use tools called calorimeters to measure heat. But sometimes, they don’t give accurate results.

To get better results, it’s important to keep the conditions of the experiment the same and repeat the tests. But remember, this might not get rid of all mistakes completely.