Ionic Compounds and Their Properties

The video tutorial explains how to write the formula for calcium bromide by using the periodic table to identify the elements and their charges. It describes the process of balancing ionic charges to achieve a net charge of zero, resulting in the formula CaBr2. The tutorial concludes with a verification of the formula to ensure accuracy.

Which element is a metal in the formation of calcium bromide?

• Bromine

• Hydrogen

• Oxygen

• Calcium

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

• Molecular

• Metallic

• Ionic

• Covalent

What is the ionic charge of calcium in calcium bromide?

• 1+

• 2+

• 1-

• 2-

How do you balance the charges in an ionic compound?

• By adding protons

• By adding electrons

• By changing the subscripts

• By changing the element

What is the correct formula for calcium bromide?

• CaBr

• CaBr2

• Ca2Br

• Ca2Br2

Why do we not write the subscript '1' in chemical formulas?

• It is implied and unnecessary

• It is too small to see

• It is not a whole number

• It is only used for gases

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

• Positive

• Negative

• Zero

• Variable

How many bromine atoms are needed to balance the charge of one calcium atom in calcium bromide?

• Two

• One

• Four

• Three