Bonding In Metals Chapter 5 section 4

Metals and Alloys Metals are usually, hard, dense, shiny, can be hammered (malleable) and can be drawn into wires (ductile). Alloys mixture of two or more elements, at least one of which is metal. Alloys are generally stronger and less reactive than the pure metals from which they are made. Examples of alloys stainless steel (iron, carbon, nickel and Chromium). Brass (Copper and Zinc). Gold alloys (gold, copper or silver).

Metallic Bond Metal atoms have 1,2 or 3 valence electrons, they are positively charged and they lose electrons easily. Metal atoms combine in regular patterns in which the valence electrons are free to move from atom to atom. Metallic Bond Is the attraction between a positive metal ion and the many electrons surrounding it.

Metallic Properties Malleability and Ductility- flatten into sheets or drawn into wires Luster- Shiny and reflective Electrical Conductivity- they can conduct electrical current because electrons in a metal moves freely. Thermal Conductivity- metals conduct thermal energy because of the valence electrons’ freedom of motion