Question

Is Bond Breaking always Endothermic?

Answer 1

• A reaction where energy is taken in from the surroundings so the temperature of the surroundings decreases.
• A hallmark of this type of reaction is that it feels cold.
• A bond can only exist, if it needs the energy to break it, i.e. the bond dissociation energy is always positive.
• Bond formation is always an exothermic process and bond breaking is an endothermic process.
• When bonds are formed the system loses energy and increases its stability.
• Since there is a decrease in energy, the energy lost is released as heat energy and thus it is an exothermic process.
• Example of Endothermic reaction: A good example of an endothermic reaction is photosynthesis.