Writing Formulas for Ammonium Carbonate

The video tutorial explains how to write the formula for ammonium carbonate. It begins by identifying the ammonium ion (NH4+) and the carbonate ion (CO3 2-), both of which are polyatomic ions not found on the periodic table. The tutorial then demonstrates how to balance the charges of these ions to achieve a net charge of zero, resulting in the correct formula for ammonium carbonate: (NH4)2CO3. The video concludes with a clean presentation of the final formula.

What is the first step in writing the formula for ammonium carbonate?

• Balance the charges between ions.

• Find the formula for the carbonate ion.

• Look up the ammonium ion on the periodic table.

• Write the formula for the ammonium ion.

Which of the following is a characteristic of the ammonium ion?

• It is a negative polyatomic ion.

• It is not important to memorize.

• It is found on the periodic table.

• It has a positive charge.

What is the charge of the carbonate ion?

• 3+

• 0

• 1+

• 2-

Why do the charges of ammonium and carbonate ions need to be balanced?

• To match the charges on the periodic table.

• To achieve a net charge of zero.

• To ensure the compound is stable.

• To make the formula look cleaner.

How many ammonium ions are needed to balance the charge of one carbonate ion?

• Two

• One

• Three

• Four

What is the correct formula for ammonium carbonate?

• NH4(CO3)2

• NH4CO3

• (NH4)3CO3

• (NH4)2CO3

What is the purpose of removing charges in the final formula?

• To balance the equation.

• To match the periodic table.

• To make it easier to read.

• To change the chemical properties.

Which of the following is NOT a step in writing the formula for ammonium carbonate?

• Changing the charges of ions.

• Finding the ammonium ion.

• Balancing the charges.

• Looking up the carbonate ion.

What is the significance of the subscript '2' in the formula (NH4)2CO3?

• It indicates the number of carbonate ions.

• It shows the number of ammonium ions needed.

• It represents the charge of the carbonate ion.

• It is used to balance the equation.