1. Introduction to Bonding

2. Metallic Bonding: Metal-metal bonds Valence electrons are mobile, moving easily from atom to atom

3. Ionic Bonding: Metals and Non-Metals Metals lose electrons, become (+) ions Non-metals gain electrons, become (-) ions + and – ions hold each other tightly in place

4. Covalent Bonding: Non-metals Sharing Electrons A handful of non-metals (C, N, O, H) are extremely common They tend to share their valence electrons with each other to gain noble gas configurations Covalent bonded elements make molecules.

5. Metallic Bonding Valence Electrons are a mobile “sea” Act as “lubrication”, allowing rows of atoms to slide past each other Mobile electrons account for conductivity, malliability, ductility

6. Metallugy The development of metallurgy has led to the rise and fall of civilizations, technological development

7. Important Metals

8. Alloys

9. Examples of Alloys Steel: Fe and C Stainless Steel: Fe, C and Cr Bronze: Cu and Sn Brass: Cu and Zn Pewter: Sn, Sb, Bi, Pb Dental Amalgam: Hg, Ag, Sn, Cu Lead Solder: Sn, Pb Lead-free Solder: Sn, Ag, Cu