Calcium Hydroxide Composition and Properties

The video tutorial explains the composition and ionic charges of calcium hydroxide (Ca(OH)2). It begins by identifying calcium hydroxide as an ionic compound composed of a metal and a polyatomic ion. The tutorial details the ionic charge of calcium, which is 2+, and the hydroxide ion, which is 1-. It further explains that there is one calcium ion and two hydroxide ions in the compound, resulting in a total of three ions. The video concludes with a summary of these findings.

What type of compound is calcium hydroxide?

• Molecular compound

• Ionic compound

• Covalent compound

• Metallic compound

What is the ionic charge of calcium in calcium hydroxide?

• 1-

• 1+

• 2-

• 2+

How many calcium ions are present in one formula unit of calcium hydroxide?

• None

• One

• Three

• Two

What is the charge of a hydroxide ion?

• 2-

• 2+

• 1+

• 1-

How many hydroxide ions are present in one formula unit of calcium hydroxide?

• One

• Two

• Three

• Four

What is the total number of ions in calcium hydroxide?

• Two

• Three

• Four

• Five

Which of the following best describes the composition of calcium hydroxide?

• One calcium ion and one hydroxide ion

• One calcium ion and two hydroxide ions

• Two calcium ions and two hydroxide ions

• Two calcium ions and one hydroxide ion