Metals and Non-Metals — Chapter Summary

Metals are generally malleable

Metals are generally malleable, ductile, lustrous, sonorous, dense, and good conductors of heat and electricity. They are usually hard and mostly soli

Non

Non-metals are generally non-lustrous, brittle, low in density, and poor conductors of heat and electricity. They may be solid, liquid, or gas. Bromin

Metals are electropositive and generally have

Metals are electropositive and generally have 1, 2, or 3 valence electrons, which they lose to form cations. Non-metals are electronegative and genera

Metals react with oxygen to form

Metals react with oxygen to form metal oxides, which are generally basic. Some metal oxides like Al2O3, ZnO, SnO, and Fe2O3 are amphoteric. Reactive m

Corrosion is the destruction of

Corrosion is the destruction of a metal surface by air and moisture. Rusting is the corrosion of iron and produces brown hydrated ferric oxide, Fe2O3.