Phosphate Ion and Aluminum Chemistry

The video tutorial explains how to write the formula for aluminum phosphate. It begins by identifying aluminum and phosphate, noting that phosphate is a polyatomic ion with a charge of 3-. The tutorial emphasizes the importance of balancing the ionic charges to form a neutral compound, resulting in the formula AlPO4. The video concludes with a summary of the process.

What is the symbol for aluminum when writing chemical formulas?

• Ag

• Am

• Al

• Au

Which of the following is a polyatomic ion?

• Phosphate

• Oxygen

• Nitrogen

• Hydrogen

What is the chemical formula for the phosphate ion?

• PO3

• PO4

• PO2

• PO5

What is the ionic charge of the phosphate ion?

• 1-

• 3-

• 2-

• 4-

How do the charges of aluminum and phosphate balance in aluminum phosphate?

• 4+ and 4-

• 3+ and 3-

• 2+ and 2-

• 1+ and 1-