Hydroxide Ion and Magnesium Compounds

The video tutorial explains how to name the compound Mg(OH)2, known as magnesium hydroxide. It begins by identifying the hydroxide ion and its role in forming ionic compounds with metals like magnesium. The tutorial outlines the steps to name such compounds by first naming the metal and then the polyatomic ion. It also covers writing chemical formulas from names, emphasizing the importance of balancing ionic charges. Additionally, the video highlights that compounds like magnesium hydroxide are considered bases.

What is the name of the ion represented by OH in chemical compounds?

• Oxide ion

• Hydroxide ion

• Oxygen ion

• Hydrogen ion

When OH is bonded to a metal like magnesium, what type of ion is it considered?

• Polyatomic ion

• Metallic ion

• Monatomic ion

• Covalent ion

What is the first step in naming the compound Mg(OH)2?

• Identify the nonmetal

• Write the name of the metal

• Determine the charge of the ion

• Count the number of hydroxide ions

What is the correct name for the compound Mg(OH)2?

• Magnesium hydroxide

• Magnesium hydrogen

• Magnesium oxide

• Magnesium hydride

What is the ionic charge of magnesium in Mg(OH)2?

• 2-

• 1-

• 2+

• 1+

How many hydroxide ions are needed to balance the charge of one magnesium ion in Mg(OH)2?

• Three

• Four

• Two

• One

What type of compound is Mg(OH)2 considered to be?

• Salt

• Neutral

• Base

• Acid

Which of the following is also considered a base like magnesium hydroxide?

• Sodium sulfate

• Sodium carbonate

• Sodium hydroxide

• Sodium chloride