Here's why:
* Endo means "within" and thermic means "heat".
* In endothermic reactions, the products have higher energy than the reactants. This means that energy must be absorbed from the surroundings for the reaction to occur.
Examples of endothermic reactions:
* Melting ice: Energy is absorbed from the surroundings to break the bonds between water molecules in the solid state.
* Photosynthesis: Plants absorb sunlight to convert carbon dioxide and water into glucose and oxygen.
* Dissolving ammonium nitrate in water: The solution becomes cold as energy is absorbed to break the bonds in the ammonium nitrate crystals.
Key characteristics of endothermic reactions:
* Energy is absorbed: This is often noticeable as a decrease in temperature.
* Enthalpy change (ΔH) is positive: This means the products have more energy than the reactants.
Let me know if you'd like more examples or a deeper explanation of any aspect!
