Zinc Phosphate Concepts and Formulas

The video tutorial explains how to write the formula for zinc phosphate. It begins by identifying zinc and phosphate, noting that phosphate is a polyatomic ion. The tutorial discusses the ionic charges of zinc and phosphate, highlighting that zinc is a transition metal with a consistent charge of 2+. The crisscross method is used to balance the charges, resulting in the formula Zn3(PO4)2. The tutorial concludes by verifying the formula to ensure the charges balance to zero.

What is the element symbol for zinc?

• Zn2

• Z

• Zc

• Zn

Which of the following is a polyatomic ion?

• Zinc

• Phosphate

• Oxygen

• Hydrogen

What is the charge of zinc in zinc phosphate?

• 1+

• 2+

• 3+

• 0

What is the charge of the phosphate ion?

• 3-

• 1-

• 4-

• 2-

Why do we need to adjust the subscripts in the formula for zinc phosphate?

• To decrease the mass

• To increase the mass

• To make it look better

• To balance the charges

What method is used to balance the charges in zinc phosphate?

• Cross method

• Crisscross method

• Diagonal method

• Parallel method

Why do we use parentheses around the phosphate in the formula?

• To denote its size

• To indicate it's a metal

• To show it's a polyatomic ion

• To highlight its color

How many phosphate ions are present in zinc phosphate?

• One

• Two

• Three

• Four

What is the final formula for zinc phosphate?

• ZnPO4

• Zn2(PO4)3

• Zn3(PO4)2

• Zn(PO4)2

What is the net charge of zinc phosphate?

• 0

• 3+

• 2-

• 1+