If you were absent from class today, or just need a review, today our guiding question was:

How do we know what to name compounds, and we do we give them a name that is different from the elements that make them up?  For example, “Why is  AlCl3 called aluminum chloride?”

Here is a picture of the Table of Contents from today:

By the end of the lesson today, you will have learned how to:

• Write the symbol and charge of an ion after being given the number of protons and electrons;
• Write the formula of an ionic compound after being given the ions or the name;
• Write the name of an ionic compound after being given the formula;
• Define an ionic bond and explain how it holds ions together in a molecule.