Naming Polyatomic Ionic Compounds

The video tutorial introduces ions and polyatomic ions, explaining that some ions consist of multiple atoms bonded together. It focuses on six types of polyatomic ions: nitrate, sulfate, phosphate, carbonate, hydroxide, and ammonium. The process of naming compounds with polyatomic ions is similar to naming regular ionic compounds, where the name of the metal is followed by the name of the polyatomic ion. Examples such as beryllium nitrate and aluminum sulfate are provided. The tutorial concludes with a note that naming polyatomic ion compounds is simpler as they do not use prefixes or suffixes, and students are given practice problems.

What is a polyatomic ion?

• A single atom that has gained or lost electrons

• A molecule with multiple atoms bonded together

• A single atom with a negative charge

• A single atom with a positive charge

What does the term 'polyatomic' literally mean?

• Many atoms

• Neutral atom

• Single atom

• Charged atom

Which of the following is NOT one of the polyatomic ions focused on in this class?

• Chloride

• Sulfate

• Ammonium

• Nitrate

Which of the following is a polyatomic ion?

• Hydrogen ion

• Nitrate ion

• Chloride ion

• Sodium ion

How is the name of a regular ionic compound formed?

• Name of the metal followed by the name of the nonmetal with the prefix -poly

• Name of the nonmetal followed by the name of the metal with the suffix -ide

• Name of the metal followed by the name of the nonmetal with the suffix -ide

• Name of the nonmetal followed by the name of the metal with the prefix -poly

What is the name of the compound with the formula Be(NO3)2?

• Beryllium nitrogen

• Beryllium nitride

• Beryllium nitrite

• Beryllium nitrate

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

• Aluminum sulfur

• Aluminum sulfide

• Aluminum sulfite

• Aluminum sulfate

In the compound Al2(SO4)3, how many sulfate ions are present?

• One

• Two

• Three

• Four

Which of the following is true about naming compounds with polyatomic ions?

• They use only suffixes

• They use prefixes and suffixes

• They do not use prefixes or suffixes

• They use only prefixes

What is the key difference between naming regular ionic compounds and those with polyatomic ions?

• Regular ionic compounds use prefixes

• Regular ionic compounds do not use suffixes

• Polyatomic ion compounds do not use prefixes or suffixes

• Polyatomic ion compounds use suffixes