Polyatomic Ions and Their Compounds

Mr. Craig's video tutorial helps students review and name polyatomic ions, emphasizing the importance of memorizing the 10 essential polyatomics for AP Chemistry. The video explains how to create flashcards for effective learning and discusses variations in polyatomics when oxygen is added or removed. It provides examples and practice exercises for naming compounds and identifying polyatomic ions. The tutorial also covers writing and balancing chemical formulas, offering tips and tricks for understanding charges and subscripts.

Why is it recommended to use flashcards for learning polyatomic ions?

• They are colorful and fun.

• They are easy to carry around.

• They help in memorizing the ions effectively.

• They are a traditional method.

What happens to the name of a polyatomic ion when an oxygen atom is removed?

• The name remains unchanged.

• The name ends with -ate.

• The name ends with -ide.

• The name ends with -ite.

Which of the following ions does not undergo oxygen addition or removal?

• Acetate

• Nitrate

• Phosphate

• Sulfate

What is the correct name for the compound with the formula Al2(SO4)3?

• Aluminum Sulfite

• Aluminum Sulfur

• Aluminum Sulfate

• Aluminum Sulfide

In the compound NH4OH, what is the role of NH4?

• It acts as a non-metal.

• It acts as a metal.

• It is a neutral compound.

• It is a covalent compound.

What prefix is used when two oxygens are removed from a polyatomic ion?

• Di

• Hypo

• Bi

• Per

What is the name of the compound with the formula K2CO3?

• Potassium Carbonite

• Potassium Carbonate

• Potassium Bicarbonate

• Potassium Hypocarbonite

What is the formula for Beryllium Hypochromite?

• BeCrO4

• BeCrO3

• BeCrO2

• BeCrO

How many oxygens are in the ion with the prefix 'per'?

• Two less than the base ion

• Two more than the base ion

• One less than the base ion

• One more than the base ion

What is the correct formula for Iron(III) Nitrite?

• Fe(NO)3

• Fe(NO2)3

• Fe(NO4)3

• Fe(NO3)3