Chemistry Quiz: Oxidation, Bonding, and Reactions

What is the oxidation number of oxygen in most compounds?

• +2

• -1

• -2

• 0

Which of the following is a correct formula for a compound containing sulfur and oxygen?

• SO3

• SO4

• S2O

• OS2

The oxidation number of fluorine in a compound is always:

• 0

• -1

• +1

• +2

In the Stock system, what is the correct name for FeCl3?

• Iron chloride

• Iron(III) chloride

• Iron(I) chloride

• Iron trichloride

The prefix “tetra-” in a chemical name indicates how many atoms?

• 2

• 3

• 4

• 5

Which of the following compounds is named correctly using the Stock system?

• N2O → Dinitrogen monoxide

• PCl5 → Phosphorus pentachloride

• Mo2O3 → Molybdenum(III) oxide

• NO → Nitrogen monoxide

What is the oxidation number of sulfur in SO2?

• +2

• +4

• +6

• -2

What is the correct formula for phosphorus(V) chloride?

• PCl3

• P2Cl5

• PCl5

• PCl2

Which element is most likely to have multiple oxidation states?

• Fluorine

• Oxygen

• Iron

• Sodium

Which formula represents an ionic compound?

• CO2

• H2O

• NaCl

• NO2