Welcome to the world of chemical reactions! Exothermic reactions release heat energy to their surroundings, resulting in temperature increases. In contrast, endothermic reactions absorb heat energy from their surroundings, causing temperature decreases. These reactions play vital roles in everyday life, from combustion to photosynthesis, highlighting the dynamic interplay of energy in chemical transformations. Let us explore the fascinating world of exothermic and endothermic reactions together! .