1. Overview:  Compounds are formed during chemical reactions  In a chemical reaction, atoms gain, give up, or share electrons in order to form bonds with other atoms  The bonds that form produce a stable compound

2.  Ionic Bonds are formed when atoms gain or lose electrons.  Atoms and molecules that gain or lose electrons are called ions.  Molecules that gain or lose electrons are called polyatomic ions.  Covalent Bonds are formed when atoms share electrons.

3.  All compounds are classified as acids or bases.  A pH scale measures whether a compound is acidic or basic.  A compound with a pH between 0 and 7 is acidic; a compound with a pH between 7 and 14 is basic; a compound with a pH of 7 is neutral.

4.  Compounds can also be classified as organic or inorganic.  Organic Compounds are made of molecules that contain carbon covalently linked to hydrogen, oxygen, or nitrogen.  Inorganic Compounds are not made of carbon, meaning they do not come from living things.

5. Students will be able to:  Discuss the types of chemical reactions that lead to the formation of compounds.  Examine the two basic types of chemical bonding: covalent and ionic.  Learn more about the formation of polyatomic ions.  Explore the properties of acids and bases.  Better understand how chemical formulas and oxidation numbers represent different compounds.  Discuss the importance of organic compounds in life  Processes.

6.  Covalence: › Covalence is a bond characterized by the sharing of electrons.  Ion: › An ion is an atom or group of atoms that carries a positive or negative charge as a result of losing or gaining electrons.

7.  Potassium reacts violently with water, while gold has no reaction with water.  What could be the difference between elements that are highly reactive and those that are not?  What could atomic structure have to do with this property?

8.  Think about the delicate balance of the atomic world, from the cellular conversion of sugar into energy, to the heating of gases and rock inside a volcano.  Chemical changes shape everything around us.