Unit 4: Energy of Bonds

 

Bond- the force that holds atoms together in a compound, formed from gaining, losing, or sharing electrons

 

Chemical Formula- tells what elements a compound contains and the exact number of each atom

 

Covalent Bond- form when 2 non-metals share electrons (neither element is "strong enough" to steal an electron to fill its outer shell, so instead, they share electrons) 

          * form between 2 non-metals

          * electrons are shared 

          * strength of bond is much weaker than ionic

 

Ionic Bond- bonds formed between metals and non-metals, also know as oppositely charge ions

          * form between metal and non-metal

          * electrons are transferred 

          * very strong

          * result of this bond: zero net charge