Ammonium and Phosphate Compounds

The video tutorial explains how to write the chemical formula for ammonium phosphate. It begins by identifying the ammonium ion (NH4+) and the phosphate ion (PO4 3-), 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 phosphate. The process involves using parentheses and subscripts to ensure the charges are balanced, leading to the final formula.

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

• Write the chemical equation

• Balance the charges

• Identify the phosphate ion

• Identify the ammonium ion

Which of the following is true about the ammonium ion?

• It consists of nitrogen and four hydrogen atoms

• It is a polyatomic ion with a negative charge

• It is a single atom with a positive charge

• It is found on the periodic table

What is the charge of the ammonium ion?

• Positive

• Variable

• Negative

• Neutral

What is the chemical formula for the phosphate ion?

• PO3 2-

• PO4 3-

• PO3 3-

• PO4 2-

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

• To make the compound reactive

• To increase the stability of the compound

• To achieve a net charge of zero

• To make the compound soluble

How many ammonium ions are needed to balance one phosphate ion?

• One

• Two

• Four

• Three

What is the final formula for ammonium phosphate?

• (NH4)2PO4

• (NH4)3PO3

• (NH4)3PO4

• (NH4)3PO4

What is the purpose of using parentheses in the formula for ammonium phosphate?

• To separate the ions

• To group the ammonium ions together

• To show the charge of the compound

• To indicate the number of phosphate ions

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

• It makes the formula easier to read

• It shows the compound is covalent

• It indicates the compound is ionic

• It shows the compound is neutral