Question how a neutral atom can become a positive or negative ion. Discuss the valence electrons and the valence electron orbitals.
Elicit from a sample configuration, what is required to remove a single electron from the last orbital.
Look up on a chart the energy required to remove a single valence electron from an atom of lithium.
Compare it to an atom of sodium, discuss why there is a difference.
Define first electronegativity.
Discuss why non metals have a higher electronegativity than metals.
View and discuss atomic radius increase and decrease.
Run a lab which demonstrates the ionization of sodium chloride compared to sucrose.
Determine why solid sodium chloride will not conduct a current but dissolved will.
Elicit why solid sucrose will not conduct a current, and neither will dissolved sucrose.
Show the non conduction of pure water.