elements & the periodic table metals chapter 3 section 2

Elements & the Periodic Table

Metals

Chapter 3

Section 2

Objective Questions

• What are the Properties of Metals?

• How can you Characterize each Family of Metals?

Metals

• Described by…– Hardness– Shininess– Malleability– Ductility

Most Metals…

• Are good conductors– Heat– electricity

• Magnetic– Fe (iron)– Co (cobalt)– Ni (nickel)

Metals have…

• High melting point– Very useful

• Except Hg (mercury)– Liquid at room

temperature

Reactivity

• Some are very reactive…– Sodium– Potassium

• Some are not…– Gold– Silver

Corrosion

• The process of oxidizing reaction and wearing away.– Tarnish– Rust

Alloys

• Mixture of 2 or more metals

• Copper + Tin– Bronze

• Copper + Zinc– Brass

• Iron + Carbon + Chromium + Vanadium– Stainless Steel

Alkali Metals

• Lithium to Francium– Extremely reactive

• Only 1 valence electron– Wants to lose it!

Alkaline Earth Metals

• Beryllium to Radium– Fairly reactive

• Only 2 valence electrons

– Wants to lose them

Transition Metals

• Groups 3-12– Includes most of the

common metals– Not very reactive

Lanthanides & Actinides

• Periods 6 & 7– Rare Earth Elements– Big & Unstable

• Radioactive