ionic bonds

Ionic BondsMr. JohnstonSaigon South

International School

Overview● How do Ions form?● How are the formulas and Names of

Ionic Compounds written?● What are the Properties of Ionic

Compounds?

Review

Rule = atoms tend to gain, lose or share electrons so as to have 8 electrons✓C would like to ✓N would like to✓O would like to

Gain 4 electrons

Gain 3 electronsGain 2 electrons

IONIC BONDbond

formed between two ions by the transfer of electrons between a metal and non-metal

How do Ions Form?

● When an atom loses ones of its electrons, it becomes a positively charged ion

● When an atom gains an electron, it becomes a negatively charged ion

How are the formulas and names of ionic compounds written?

1). Ionic bond – electron from Na is transferred to Cl, this causes a charge imbalance in each atom. The Na becomes (Na+) and the Cl becomes (Cl-), charged particles or ions. Chlorine becomes “Chloride”

Quick Review:● Which atoms in each picture are giving

and gaining an electron?● Which are now positively charged and

negatively charged?

Properties of Ionic Compounds

Hard, brittle crystals

High Melting Points

They conduct electric current when dissolved in water.

Exit Interview on “Infuse Learning”