Calcium Nitrate and Ionic Compounds

The video tutorial explains how to write the Lewis structure for calcium nitrate (Ca(NO3)2). It begins by introducing calcium nitrate as an ionic compound composed of calcium, a metal, and nitrate ions, which are nonmetals. The tutorial details the process of electron transfer from calcium to the nitrate ions, forming an ionic bond. It then guides viewers through drawing the Lewis structure, including the placement of brackets around ions to indicate their charges. The video concludes by describing the formula unit of calcium nitrate and its crystalline structure.

What type of compound is calcium nitrate?

• Covalent compound

• Ionic compound

• Metallic compound

• Molecular compound

What happens to the electrons in an ionic compound?

• They are lost by nonmetals.

• They remain with the metal atoms.

• They are transferred from metal to nonmetals.

• They are shared equally between atoms.

How many valence electrons does calcium lose in forming calcium nitrate?

• Four

• Three

• Two

• One

What charge does the calcium ion have after losing electrons?

• 1+

• 2+

• 1-

• 2-

What charge do the nitrate ions have after gaining electrons?

• 1+

• 2-

• 2+

• 1-

What is the role of brackets in the Lewis structure of calcium nitrate?

• To highlight the central atom

• To indicate the number of atoms

• To show the charge of ions

• To separate different molecules

What is the nitrite ion replaced with in the Lewis structure?

• A molecular formula

• A single line

• A double bond

• A Lewis structure

What is a formula unit in the context of calcium nitrate?

• A covalent structure

• A single atom

• A repeating unit in a crystal

• A molecular bond

How is calcium nitrate typically found in nature?

• As a gas

• As a liquid

• As a crystal

• As a powder