New Area of focus: Chemical Bonding Copyright © 2010 Ryan P. Murphy

Chemical bonds: the attraction that holds atoms together as a result of rearranging their electrons. Atoms try to have 8 valence electrons (or 2 for H and He), so they will either increase their number or decrease it to get closer to 8. This makes them chemically bonded to other atoms.

Ionic, Covalent, Metallic – Covalent – Share electrons – Ionic – Gain or lose electrons (transfer) – Metallic- Many free electrons Copyright © 2010 Ryan P. Murphy

Ionic, Covalent, Metallic – Covalent – Share electrons – Ionic – Gain or lose electrons (transfer) – Metallic- Many free electrons Copyright © 2010 Ryan P. Murphy

“My name is Bond.” “My name is Bond.” Copyright © 2010 Ryan P. Murphy

“Covalent Bond.” Copyright © 2010 Ryan P. Murphy

Ionic, Covalent, Metallic – Covalent – Share electrons – Ionic – Gain or lose electrons (transfer) – Metallic- Many free electrons Copyright © 2010 Ryan P. Murphy

Ionic, Covalent, Metallic – Covalent – Share electrons – Ionic – Gain or lose electrons (transfer) – Metallic- Many free electrons Copyright © 2010 Ryan P. Murphy

Covalent bonding occurs by a sharing of valence electrons Copyright © 2010 Ryan P. Murphy

Covalent bonding occurs by a sharing of valence electrons (Strongest) (SPONCH). Copyright © 2010 Ryan P. Murphy

Ionic bonding (+/-) Bonds created by the attraction of opposite charges. Copyright © 2010 Ryan P. Murphy

“Ionic Please.” “Transferred.” “Not shared.” “Ionic Please.” “Transferred.” “Not shared.”

Ionization: The process of removing electrons from an atom to form ions. Copyright © 2010 Ryan P. Murphy

Ionic - One atom strips electron from the other so both are now stable. Held then by + / - charge Copyright © 2010 Ryan P. Murphy

Ionic - One atom strips electron from the other so both are now stable. Held then by + / - charge Copyright © 2010 Ryan P. Murphy

Ionic - One atom strips electron from the other so both are now stable. Held then by + / - charge Copyright © 2010 Ryan P. Murphy

Ionic Bonding: Forms crystal lattice. Copyright © 2010 Ryan P. Murphy

Metallic bonding: The bonding between atoms within metals. The sharing of many free electrons. Copyright © 2010 Ryan P. Murphy

Most metal atoms bond with other types of metal to form alloys- a mixture of two or more metals. Metal atoms lose their valence electrons and become positively charged ions. The free electrons float around the atoms in a “sea of electrons”. The electrons are attracted to the positively charged atoms. The” sea of electrons” can explain the malleability, luster, high electrical conductivity, and high thermal conductivity of metals.

Remember: Covalent – Sharing an Electron many of the SPONCH elements.

Remember: Covalent – Sharing an Electron many of the SPONCH elements. Ionic – Opposite charges + / -

Remember: Covalent – Sharing an Electron many of the SPONCH elements. Ionic – Opposite charges + / - Metallic – Many free floating electrons

Quiz Wiz: Label as either… Covalent, Ionic, or Metallic 1-10 Copyright © 2010 Ryan P. Murphy

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Bonus: Name the actor and movie character.

Answers! Quiz Wiz: Label as either, Covalent, Ionic, or Metallic 1-10 Copyright © 2010 Ryan P. Murphy

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10 10

Bonus: Name the actor and movie character.

Bonus: Name the actor and movie character. Sean Connery as James Bond