Polyatomic Ions and Ionic Compounds

This podcast discusses the differences between monoatomic and polyatomic ions. It begins with a general overview of ions, including cations and anions. The focus then shifts to monoatomic ions, explaining how they are formed and providing examples like magnesium. The discussion continues with polyatomic ions, using nitrate as an example, and explains how these ions are covalently bonded yet carry a charge. Finally, the podcast covers the formation of ionic compounds using the swap and drop method, highlighting the role of polyatomic ions as single units in these compounds.

What is the charge of a cation?

• Positive

• Negative

• Neutral

• Variable

How does a monoatomic ion become positively charged?

• By losing electrons

• By gaining protons

• By gaining electrons

• By losing protons

Which of the following is an example of a monoatomic ion?

• Ammonium

• Sulfate

• Magnesium

• Nitrate

What is the charge of the nitrate ion?

• +2

• -1

• +1

• -2

How are the atoms in a polyatomic ion bonded?

• Metallic bonds

• Covalent bonds

• Hydrogen bonds

• Ionic bonds

What happens when you add up all the protons and electrons in a polyatomic ion like nitrate?

• It depends on the ion

• They are equal

• Electrons outnumber protons

• Protons outnumber electrons

In an ionic compound, how do polyatomic ions behave?

• As individual ions

• As a single unit

• As neutral molecules

• As separate atoms

What is the result of the 'swap and drop' method in ionic compounds?

• Neutralizing the compound

• Forming covalent bonds

• Creating new ions

• Balancing charges

Which of the following is NOT a polyatomic ion?

• Sulfate

• Magnesium

• Ammonium

• Nitrate

What is the charge on a polyatomic ion that acts as a single unit in an ionic bond?

• Negative

• Positive

• Neutral

• Variable