1. CHEMICAL BONDING The most important property of an is how it combines

2. Outcomes/Objectives: Things you will be able to do Define chemical bond and relate to valence electrons Predict an elements chemical properties using the number of valence electrons. Draw Bohr models and electron dot diagrams for elements. List three types of bonding Describe how an Ionic Bond forms and the force that keeps them together. Define Ion QUIZ Describe how a covalent bond forms. Define Molecule Recognize and describe polyatomic ions. Test Preparation: Study Daily, Complete All Assignments,Stay 10 th, Stay on Task (Focus), PLEASE ask for HELP when LOST

3. Chemical Bond Attractive force that holds or together Atoms of different Elements can combine with each other in many different ways Example:

4. ELECTRONS AND BONDING e- are arranged into Energy Levels can hold more e- as you move farther away from the nucleus via (2[level] 2 ) For bonding reasons “in general” atoms will form compounds if the bonding results in both Atoms…… The # of valence e- determines an elements

5. Make Bohr Models of Elements 3 Through 10 Electron Dot Diagrams of Elements only show the symbol surrounded by dots that represent the # of valence electrons. Create e- dot diagrams for elements 3 to 10.

6. CHEMICAL BONDING AND STABILITY Atoms want to have stable electron configurations. And in order to be stable they need in their outer energy level. This can be achieved by bonding with other atoms. transfer of electrons from atom to atom sharing of electrons the attraction between a metal cation and the shared electrons that surround it

7. Ionic Bonds = “Transfer of e-” Atoms can in their outer level (shell) Form between Stay together because of an between oppositely charged

8. IONS METALS tend to form than the atoms that make them up b/c the nucleus NONMETALS tend to form than the atoms that make them up b/c the nucleus

9. COVALENT BONDING Sharing Form between……. Form Can be More

10. COVALENTLY BONDED IONS _________________: a group of covalently bonded atoms that has an electric charge due to Example: Metallic Bonds: