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Chemical Bonding

Published on Oct 04, 2018

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PRESENTATION OUTLINE

Chemical Bonding

Combining Elements

Compounds are CHEMICALLY combined
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Combining atoms to form new substance is called CHEMICAL BONDING
Ex: Sugar combines CARBON, HYDROGEN, and OXYGEN

Compounds may be DIFFERENT from the elements
Sodium and Chlorine and very different from Sodium Chloride

Bonds form when electrons are:

GIVEN, TAKEN or SHARED
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Only VALENCE electrons are involved.
Those are in the OUTSIDE LEVEL

Photo by TonZ

Use the GROUP NUMBER on the periodic table

Atoms are UNSTABLE if they don't have a FULL outer level
Atoms bond to COMPLETE the LAST level

Atoms with 8 electrons is full and stable
Atoms with 8 usually don't form bonds

Photo by wiredforlego

Example:
Sulfur has 6 valence electrons
It fills its level by gaining or sharing 2 electrons

Photo by Jake Slagle

Helium has 1 energy level
It only needs 2 electrons

Photo by Lam Thanh