When we look at endothermic and exothermic reactions, we can see some important differences:

1. Energy Absorption vs. Release:

   • Endothermic: These reactions take in energy (often in the form of heat) from their surroundings. A good example is photosynthesis, where plants soak up sunlight!
   • Exothermic: These reactions let out energy into the environment. For instance, when we burn fossil fuels, it produces heat!

2. Temperature Change:

   • Endothermic reactions feel cold because they are pulling energy in.
   • Exothermic reactions feel hot because they are releasing energy.

3. Energy Profiles:

   • Endothermic graph: Here, the starting energy level is low, and the final energy level is high.
   • Exothermic graph: Here, the starting energy level is high, and the final energy level is low, showing that energy has been released.

It’s really interesting to see how energy changes affect these reactions!