Copper(II) Bromide and Ionic Compounds

The video tutorial explains how to write the formula for copper(II) bromide. It begins by identifying the element symbols for copper (Cu) and bromine (Br), and discusses the nature of ionic compounds, focusing on the charges of the ions involved. The tutorial introduces the crisscross method to balance these charges and derive the correct formula, CuBr2. The video concludes with a verification of the formula, ensuring the net charge is zero, and a brief summary of the process.

What is the element symbol for copper?

• Cu

• Cr

• Co

• C

Which of the following is a non-metal?

• Iron

• Bromine

• Copper

• Zinc

What type of compound is formed between a metal and a non-metal?

• Metallic

• Covalent

• Molecular

• Ionic

What is the ionic charge of copper in copper(II) bromide?

• 1+

• 2-

• 2+

• 1-

How many bromine ions are needed to balance the charge of one copper ion in copper(II) bromide?

• Three

• Two

• One

• Four

What method is used to determine the subscripts in the formula of copper(II) bromide?

• Crisscross

• Elimination

• Cross-multiplication

• Substitution

What is the net charge of a correctly balanced ionic compound?

• Zero

• Negative

• Variable

• Positive

What is the correct formula for copper(II) bromide?

• CuBr

• Cu2Br

• Cu2Br2

• CuBr2

Who is the narrator of the video?

• Dr. D

• Dr. B

• Dr. A

• Dr. C