Does breaking old bonds require energy and forming new bonds release energy?

Answer 1

In order to break a bond, you need to apply more energy than that holding it together.

Energy is released when the bond is broken (the energy that was previously holding the bond together.

Answer 2

A bond is formed when electrons enter a special low energy state (a state of negative potential). To break this bond and return the atoms to their original free state energy must be supplied. Energy must be supplied to the system to return the system to a higher energy state (the atomic free state).

One way to conceptualize this is by considering applying energy via heat. Heat causes bonds to stretch and strain as the atoms between which these bonds are formed get "jostled" by the transfer of available kinetic energy (heat). As the heat is increased the jostling increases until the strain is great enough to break the bonds.

Answer 3

energy needed to break a bond is endothermic and its value per mole depends on the type of bond IE its strength

Heat is usually transferred to the object so all its molecules intend to move faster so to break its bond.

The heat amout required usually depend on the mass of the object what bond is it and what is the molecular structure of the object, and also the molecules in it.

Graphite and dimond are both made up of carbon atoms with covalent bond, yet the former is the weakest/most slippery(molecules on the surface is easily broken off) solid made of element and the latter is the strongest solid ever known, so never underestimate the power of molecular structure.

Hydrogen bond, meanwhile, is affected by the activity of hydrogen ions() which is indicated by pH value. Too acidic or basic can cause the bond to break.

Answer 4

The breaking of bonds always involves the absorption of energy (conversely the formation of bonds always releases energy)

Answer 5

A chemical compound is a stable form of elements, during the formation of compound a specific amount of heat per mole is librated , now same amount of heat is required to break down the compound into elements.

Answer 6

Yes, breaking old bonds requires energy input to overcome the existing attractions between atoms or molecules. On the other hand, forming new bonds releases energy as the atoms or molecules come together to create new stable connections.

Answer 7

Because everything that does work require energy, and bond breaking is work.

Answer 8

no