1. Bellringer/5.3 Notes Bellringer: 1.What is an ion? 2.What is the difference between a cation and anion? 3.Ionic bonds are formed between ___ ___. 4.What is shared between covalently bonded atoms? 5.How many types of covalent bonds are there? Name them.

2. I. Naming Ionic Compounds A.An ionic compound is formed from cations and anions 1.The name of the cation does not change Pg. 159, Table 4

3. 2. The name of the anion does change a.Typically the last three letters of the element’s name changes to -ide

4. B. Oxidation numbers – Positive or negative # assigned to an element to show its combining ability in a compound. 1.The transition elements can have variable oxidation numbers Example: Sodium forms an ion with a 1+ charge. 1+ is Sodium's oxidation # 1+ 2+ 4+ 3+ 3-2- 1-0

5. Math Skills, Pg. 161 2.Covalent bonds form between two non-metal atoms. 3.Nonpolar covalent bonds form when the electronegativity values are very similar. 4. Polar covalent bonds form when the electronegativity values are a little further apart.