o Rub the rubber balloon on your hair and place side that is rubbed on the wall
o Rubber balloon should be stuck to the wall
o Question: “How can you explain what has happened?”
o Give some time for some class discussion.
• Display the image of an atom on the overhead and briefly review:
o Central nucleus of the atom is stationary and has a positive charge
o Electron traveling around the nucleus has a negative charge
o The atom is considered to have a neutral charge if there are the same amount of positive charges as there are to negative charges