Copper II Nitrate and Nitrate Ions

The video tutorial explains how to write the formula for Copper II Nitrate. It begins by identifying copper and nitrate ions, highlighting the need to refer to a list of polyatomic ions for nitrate. The tutorial then discusses the nature of ionic compounds and the importance of charge balancing. Using the crisscross method, the video demonstrates how to balance the charges to achieve a neutral compound. Finally, it verifies the formula and concludes with the correct representation of Copper II Nitrate as Cu(NO3)2.

What is the chemical symbol for copper?

• Cr

• C

• Co

• Cu

Why can't nitrate be found directly on the periodic table?

• It is a polyatomic ion.

• It is a metal.

• It is a transition metal.

• It is a noble gas.

What is the charge of the nitrate ion?

• 1+

• 2+

• 2-

• 1-

What does the Roman numeral II indicate in Copper II Nitrate?

• The atomic number of copper.

• The charge of the copper ion.

• The number of copper atoms.

• The number of nitrate ions.

What method is used to balance the charges in Copper II Nitrate?

• Addition method

• Crisscross method

• Substitution method

• Elimination method

Why are parentheses used around the nitrate ion in the formula?

• To highlight its charge.

• To show it is a gas.

• To indicate multiple ions.

• To separate it from metals.

How do the charges of copper and nitrate ions cancel each other out?

• 1+ and 2-

• 2+ and 2-

• 2+ and 1-

• 1+ and 1-

What is the net charge of Copper II Nitrate?

• 1-

• 1+

• 0

• 2+

What is the final formula for Copper II Nitrate?

• Cu(NO3)2

• Cu(NO2)2

• Cu(NO2)3

• Cu(NO3)