Metals And Non-metals

Properties of Metals Metals – Located to the left and below the diagonal line in the periodic table.

Properties of Metals

• Metals are usually solids at room

temperature • Good conductors of heat and electricity • High melting points and boiling points (except Hg) • High densities (except some group 1 metals) • Metals are shiny and reflect light

Properties of Metals • Malleable – can be bent, pounded into sheets • Ductile – can be stretched into wire without breaking

Properties of Metals •Mainly have 1, 2, or 3 outer shell electrons. •React with nonmetals to form ionic bonds.

Properties of Metals • Metallic Bonds

– Metal atoms are surrounded by a sea of electrons because they are not held tightly

Properties of Nonmetals • Nonmetals

are located to the right of the stair step line.

Properties of Nonmetals • The nonmetals exist in all three of the

states of matter at room temperature: gases (such as oxygen), liquids (such as bromine), and solids (such as carbon).

Properties of Nonmetals

• Nonmetals are not able to conduct

electricity or heat very well. • Nonmetals have much lower melting and boiling points than metals. (Consider all of the ‘red’ ones.) • Nonmetals are not nearly as dense as metals.

Properties of Nonmetals

• The nonmetals have no metallic luster, and do not reflect light. • Nonmetallic elements are very brittle, and cannot be rolled into wires or pounded into sheets.

Sulfur powder

Properties of Nonmetals • They have

4 to 8 outer shell electrons. • Nonmetals bond with other nonmetals to form covalent bonds.