Ionic Compounds and Their Properties

The video tutorial explains how to name and write formulas for ionic compounds, specifically focusing on potassium iodide (KI). It begins by identifying KI as an ionic compound due to the presence of a metal and a nonmetal. The tutorial then outlines the rules for naming binary ionic compounds, emphasizing the use of the periodic table to determine the names of the metal and nonmetal components. Finally, it explains how to write the chemical formula for potassium iodide by considering the ionic charges of potassium and iodine, ensuring the charges cancel out to form a neutral compound.

What type of compound is formed when a metal bonds with a nonmetal?

• Covalent compound

• Organic compound

• Ionic compound

• Metallic compound

What is a binary ionic compound?

• A compound with three elements

• A compound with a metal and a nonmetal

• A compound with two nonmetals

• A compound with two metals

How do you name the nonmetal in a binary ionic compound?

• By using its symbol

• By adding 'ate' to its root name

• By using its full name

• By adding 'ide' to its root name

What is the correct name for the compound KI?

• Potassium iodine

• Potassium iodide

• Potassium iodate

• Potassium iodite

What is the ionic charge of potassium when it forms an ionic bond?

• 2-

• 2+

• 1-

• 1+

What is the ionic charge of iodine in KI?

• 2-

• 1+

• 2+

• 1-

How many potassium and iodine atoms are needed to form potassium iodide?

• Two potassium and one iodine

• One potassium and two iodine

• One potassium and one iodine

• Two potassium and two iodine