Release of Heat

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Release of Heat

Postby Rebekah_Park_2C » Fri Jan 08, 2016 1:04 pm

I understand that if a bond is broken then it releases heat, but how exactly are the bonds broken? What breaks these bonds? Can only certain bonds break?

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Joined: Tue Nov 17, 2015 3:00 am

Re: Release of Heat

Postby AlisonWong_1D » Fri Jan 08, 2016 1:26 pm

Breaking bonds is actually an endothermic process. That means it doesn't release heat; instead, it absorbs heat.

1. A bond between two atoms/molecules is formed because of some transfer/sharing of electrons (for ionic bonds, transfer; for covalent bonds, sharing).
2. Atoms bond together to become more stable. So breaking it will make it more unstable, which the atoms don't want.
(Stability comes from filling their outer electron shells.)

In order to break the bond, you need to put energy into pulling them apart (overcoming electrical attraction). Different bonds require different amounts of energy to break. Some are very stable and difficult to break and therefore require more energy, but some are easier to break because the attraction wasn't very strong to begin with.

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