• Describe the evidence that supports the idea that the simple particles have a property we call charge.
  • Describe the evidence that led Thomson to suggest that the mobile charge in atoms is negative.
  • Use the Thomson model of the atom to account for the fact that neutral atoms can become either positively or negatively charged by the loss or gain of electrons.
  • Identify properties that distinguish metals from non-metals.
  • Describe the evidence that distinguishes ionic from molecular or atomic solids.
  • Given the formula of an ionic or molecular substance, state its name.
  • Given the name of ionic or molecular substance, write its formula.
  • From the name or formula of a substance determine whether that substance is ionic or molecular.




Cathode Ray Tube
Chemical Families
Distinguishing Ionic, Molecular & Atomic Solids
Magnetic Induction
Valence Electrons & The Periodic Table
Writing Formulas for Ionic Compounds
Naming Ionic Compound with Polyatomics
Naming Ionic Compounds with Transition Metals (Roman Numerals)
Naming Covalent (Molecular) Compounds


PhET: Balloons & Static Electricity
PhET: Faraday’s Law of Induction (How Electricity is Generated!¬† Super cool! Magic!)
Gizmo: Ionic Bonding

PBS Bonding 


JJ Thompson’s Discovery of the Electron