How do endothermic reactions absorb energy?

Endothermic reactions absorb energy from their surroundings in the form of heat.

In more detail, endothermic reactions are chemical reactions that require energy to proceed. This energy is typically absorbed from the surroundings, causing the surroundings to cool down. The energy is used to break the bonds in the reactants, allowing new bonds to form in the products. This is why endothermic reactions often feel cold to the touch - they are literally absorbing heat energy from their surroundings.

The term 'endothermic' comes from the Greek words 'endo', meaning 'inside', and 'therm', meaning 'heat'. So, an endothermic reaction is one that takes in heat from its environment. This is in contrast to exothermic reactions, which release heat into their surroundings.

The energy absorbed in an endothermic reaction is stored in the chemical bonds of the products. This energy can be released later when the products are used, for example when we burn fuel. This is why fuels store energy - they are the products of endothermic reactions.

In terms of energy diagrams, endothermic reactions have a higher energy level for the products than the reactants. This is because the energy absorbed from the surroundings is stored in the products. The difference in energy levels represents the amount of energy absorbed.

In summary, endothermic reactions absorb energy from their surroundings in the form of heat. This energy is used to break the bonds in the reactants and form new bonds in the products. The energy is stored in the chemical bonds of the products, and can be released later when the products are used.