Properties of Metals Malleable Ductile Thermal Conductivity a material that can be pounded, molded into shapes Ductile a material that can be pulled into a long wire Thermal Conductivity the ability of an object to transfer heat Electrical Conductivity the ability of an object to transfer electricity Reactivity how easily a substances reacts with other substances Corrosion The gradual wearing away of metal due to chemical reaction

Metals How does the reactivity of metals change across the periodic table? The reactivity of metals tends to decrease as you move from left to right across the periodic table. http://periodicvideos.com/ http://youtu.be/5Vd5pqjbWJU

Metals in the Periodic Table The metals in Group 1, from lithium to francium, are called the ________________. React with atoms of other elements by losing one electron.

Metals in the Periodic Table Group 2 of the periodic table contains the ___________________. These elements are not as reactive as the metals in Group 1, but they are more reactive than most other metals.

Metals in the Periodic Table The _________________ are less reactive than the metals in Groups 1 and 2.

Nonmetals, Inert Gases, and Semimetals What are the properties of nonmetals and inert gases? Most nonmetals are poor conductors of electric current and heat. Solid nonmetals are dull and brittle.

Properties of Nonmetals When nonmetals and metals react, electrons move from the metal atoms to the nonmetal atoms.

Families of Nonmetals Each element in the carbon family has atoms that can gain, lose, or share four electrons when reacting with other elements.

Families of Nonmetals Group 15, the nitrogen family, contains two nonmetals: nitrogen and phosphorus. These non-metals usually gain or share three electrons when reacting with other elements.

Families of Nonmetals Group 16, the oxygen family, contains three nonmetals: oxygen, sulfur, and selenium. These elements usually gain or share two electrons when reacting with other elements.

Families of Nonmetals The Group 17 elements, the halogens, are very reactive. Atoms of these elements easily form compounds by sharing or gaining one electron when reacting with atoms of other elements.

Families of Nonmetals The elements in Group 18 are the inert gases. They do not ordinarily form compounds because atoms of inert gases do not usually gain, lose, or share electrons.

Semimetals How are semimetals useful? The most useful property of the semimetals is their varying ability to conduct electric current.