Understanding Potassium Hydroxide Properties

The video tutorial explains how to name the compound KOH, known as potassium hydroxide. It begins by identifying the components of KOH: potassium, a metal, and hydroxide, a polyatomic ion. The tutorial outlines the rules for naming ionic compounds, emphasizing the importance of recognizing the metal and the polyatomic ion. It also covers how to write chemical formulas from given names, highlighting the ionic charges of potassium and hydroxide. Finally, the video explains that KOH is a base due to the presence of hydroxide bonded to a metal.

What is the polyatomic ion present in KOH?

• Hydroxide

• Nitrate

• Sulfate

• Carbonate

Which metal is bonded to the hydroxide ion in KOH?

• Sodium

• Calcium

• Magnesium

• Potassium

What is the correct name for the compound KOH?

• Potassium Oxide

• Potassium Hydroxide

• Potassium Hydride

• Potassium Peroxide

How do the charges of potassium and hydroxide ions balance in KOH?

• Potassium has a -2 charge and hydroxide has a +2 charge

• Both have a -1 charge

• Both have a +1 charge

• Potassium has a +1 charge and hydroxide has a -1 charge

What is the net charge of KOH?

• -1

• 0

• +2

• +1

What type of compound is KOH?

• Acid

• Base

• Salt

• Neutral

What does the presence of OH in KOH indicate about its chemical nature?

• It is neutral

• It is a salt

• It is a base

• It is an acid