Polyatomic Ions and Ammonium Nitrate

The video tutorial explains how to identify the number of ions in ammonium nitrate (NH4NO3). It highlights the presence of two polyatomic ions: ammonium (NH4+) and nitrate (NO3-). The tutorial emphasizes the importance of memorizing these ions and their charges to understand that NH4NO3 is a neutral ionic compound. The video concludes by reiterating the need to recognize these ions in ionic compounds.

What are the two polyatomic ions present in ammonium nitrate?

• Ammonium and Sulfate

• Ammonium and Nitrate

• Nitrate and Sulfate

• Sulfate and Phosphate

What is the charge of the ammonium ion in NH4NO3?

• 1-

• 2+

• 1+

• 2-

Why is ammonium nitrate considered a neutral compound?

• Because it has more negative ions than positive ions

• Because it has more positive ions than negative ions

• Because it has no ions

• Because the positive and negative charges balance each other out

What is the charge of the nitrate ion in NH4NO3?

• 1+

• 2+

• 2-

• 1-

Which of the following is a polyatomic ion that needs to be memorized for ionic compounds?

• SO4 2-

• NH4+

• H2O

• Cl-

What is the best way to recognize NH4+ and NO3- in ionic compounds?

• By calculating their molecular weight

• By memorizing their structures

• By observing their color

• By measuring their pH