elements & the periodic table metals chapter 3 section 2
TRANSCRIPT
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