What is an atom?
 What are the parts of an atom?
Which part of an atom has a negative charge?
Which part of an atom has a positive charge?
Which part of an atom has a n0 charge?
What is the Periodic Table?
Which is an example of a molecule?
Which is an example of a compound? How are molecules and compounds different?
What information is contained in a chemical formula?
What are salts?