1. Living By Chemistry SECOND EDITION
Unit 1: ALCHEMY
Matter, Atomic Structure, and Bonding

2. Lesson 23: Alchemy of Paint
Transition Metal Chemistry

3. Key Question
What types of compounds are made from transition metals?

4. You will be able to:
recognize transition metal compounds and their names
determine the charge on transition metal ions given their chemical formula

5. Discussion Notes
Many of the paint pigments that artists historically used and continue to use are ionic metal-nonmetal compounds.
(We will not be doing this lab due to the toxicity of working with heavy metals)

6. Transition Metal Ion names/formulas
Transition metals can have multiple types of ions. They’re still cations, though. Naming transition metal compounds have a special designation—use of Roman Numerals to indicate the charge of the metal Examples: Lead (IV) Oxide would be PbO2 Iron (III) Oxide would be Fe2O3

7. From formula to name
What would be the name for CoO? First, start with your known ion--oxygen oxygen’s ionic symbol is O-2 if oxygen is -2, then cobalt must be +2 Name: Cobalt (II) Oxide

8. From formula to name
What is the ionic compound name for Cu2O3? Oxygen’s charge 3(-2) = -6 Therefore: Copper’s charge is +6/2 = +3 Name: Copper (III) Oxide

9. From formula to name
Now You Try Given: What would be the name for FeCl3? Start with your known ion, Chlorine… Cl has a -1 charge. Since there’s 3 Chlorines, 3(-1) = -3 Therefore, iron must be +3 Name: Iron (III) Chloride