Endothermic and exothermic reactions differ based on how they exchange energy with their surroundings. 🌡️ In endothermic reactions, energy is absorbed, causing the temperature of the surroundings to drop for example, photosynthesis. In exothermic reactions, energy is released as heat, making the surroundings warmer like in combustion or freezing. Understanding these energy changes is key to mastering thermodynamics in chemistry. If you're struggling with concepts like these, you can always find expert tutors to do my proctored chemistry exam for me and ensure perfect results.