Ionic Compounds and Their Formulas

Mrs. Baisden explains how to name and write formulas for ionic compounds with single charged metals. The video reviews periodic table groups and their charges, focusing on groups 1, 2, 13, and some transition metals. It provides rules for naming ionic compounds, emphasizing the order of cations and anions, and offers examples. The video also covers writing formulas by determining charges and using the crisscross method.

Which groups on the periodic table are focused on when discussing single charged metals?

• Groups 3, 4, 5, 6, and 7

• Groups 1, 2, 13, 15, 16, and 17

• Groups 8, 9, 10, 11, and 12

• Groups 14, 18, and 19

What is the first step in naming an ionic compound?

• Find the atomic mass of the elements

• Identify the type of compound

• Calculate the molecular weight

• Determine the charge of the anion

How is the anion named in an ionic compound?

• By using the full element name

• By adding 'ide' to the root of the element name

• By using the Latin name of the element

• By adding 'ate' to the root of the element name

What is the name of the compound formed by sodium and iodine?

• Sodium chloride

• Sodium iodine

• Sodium oxide

• Sodium iodide

Which of the following is the correct name for the compound CaS?

• Calcium sulfite

• Calcium sulfur

• Calcium sulfate

• Calcium sulfide

What is the first step in writing formulas for ionic compounds?

• Calculate the molar mass

• Find the atomic number of the elements

• Determine the charges of the cation and anion

• Identify the type of bond

How are the charges used when writing formulas for ionic compounds?

• They are crisscrossed to become subscripts

• They are subtracted from each other

• They are added together

• They are multiplied by each other

What is the formula for a compound formed by aluminum and oxygen?

• AlO2

• AlO

• Al2O3

• Al3O2

When can subscripts in a chemical formula be reduced?

• When they are the same

• When they are both even numbers

• When they are prime numbers

• When they are both odd numbers

What is the correct formula for beryllium iodide?

• BeI2

• BeI

• Be2I

• Be2I2