Oxidation States and Ionic Compounds

Mrs. Clark's chemistry class focuses on naming ionic compounds, particularly those involving transition metals. The lesson covers the binary naming system, the use of Roman numerals to indicate oxidation states, and provides examples to illustrate these concepts. A shortcut method for determining oxidation numbers is also introduced. The video concludes with a summary and encouragement to explore additional resources.

What is the main focus of Mrs. Clark's chemistry lesson?

• Balancing chemical equations

• Naming ionic compounds with transition metals

• Naming ionic compounds with main metals

• Understanding molecular geometry

In the binary naming system, how many names should an ionic compound have?

• Four

• Two

• One

• Three

Which groups on the periodic table contain transition metals?

• Groups 1 and 2

• Groups 3 through 12

• Groups 13 through 18

• Groups 1 through 18

Why are Roman numerals used in naming ionic compounds with transition metals?

• To denote the compound's solubility

• To show the compound's molecular weight

• To indicate the number of atoms

• To specify the oxidation state of the metal

Which transition metal always has a +1 oxidation state?

• Iron

• Zinc

• Cadmium

• Silver

What is the oxidation state of iron in FeCl2?

• +1

• +3

• +4

• +2

In the compound Cr2O3, what is the oxidation state of chromium?

• +3

• +2

• +1

• +4

What is the oxidation state of copper in Cu2S?

• +2

• +4

• +1

• +3

Why is the multiply and divide shortcut preferred over the criss-cross method?

• It is faster

• It is more accurate

• It is less prone to errors

• It is easier to remember

In the compound SnO2, what is the oxidation state of tin?

• +5

• +3

• +4

• +2