(1.37-1.39) Ionic bonding + Charges of ions + Compound Formulae

What is an ion?

A particle that possesses an overall electric charge because it contains an uneven number of protons and electrons.

What is the term for a positive ion?

Cation

What is the term for a negative ion?

Anion

How is an ion formed?

When atoms gain or lose an electron, their charge becomes positive or negative.

lose electron - become positive

gain electron - become negative

What are the charges of metals (group 1, 2, 3) on the Periodic Table?

1+, 2+, 3+

What are the charges of non-metals (Groups 5, 6, 7) on the Periodic Table?

-3, -2, -1

What is the formula for silver?

Ag+

What is the formula for copper?

Cu²⁺

What is the formula for iron 2?

Fe²⁺

What is the formula for iron 3?

Fe³⁺

What is the formula for lead?

Pb²⁺

What is the formula for zinc?

Zn²⁺

What is the formula for hydrogen?

H+

What is the formula for hydroxide?

OH^-

What is the formula for ammonium?

NH₄ ⁺

What is the formula for carbonate?

CO₃ ^2-

What is the formula for nitrate?

NO₃ ^-

What is the formula for sulfate?

SO₄ ^2-

Describe how to write formulae for the compounds formed between the above ions.

Remove electrons from outer shell of one atom.

Add electrons to outer shell of other atom to form an ionic compound.

Describe how to name a metal+non-metal compound.

Take the name of the metal, then the name of the non-metal and change the ending to -ide.