Calcium Carbide and Ionic Bonds

The video tutorial explains how to write the formula for calcium carbide, focusing on the unique properties of the carbide ion, which consists of two carbon atoms triple-bonded together with a 2- charge. It discusses how calcium, with a 2+ charge, bonds with the carbide ion to form calcium carbide, resulting in a net charge of zero. The structure and formula of calcium carbide (CaC2) are detailed, along with common names like calcium acetylide. The tutorial aims to clarify common confusions regarding the carbide ion and its naming conventions.

What is essential to know when writing the formula for calcium carbide?

• The color of calcium carbide

• The atomic number of calcium

• The structure of the carbide ion

• The melting point of calcium

How are the carbon atoms in the carbide ion bonded?

• Triple bond

• Double bond

• Quadruple bond

• Single bond

What is the ionic charge of the carbide ion?

• 2+

• 1+

• 1-

• 2-

Which element is most important in bonding with the carbide ion?

• Magnesium

• Calcium

• Potassium

• Sodium

What is the net charge of calcium carbide?

• 2+

• 1+

• 1-

• 0

What is the chemical formula for calcium carbide?

• CaC

• CaC2

• Ca2C

• Ca2C2

What is another name for calcium carbide?

• Calcium acetylide

• Calcium oxide

• Calcium chloride

• Calcium carbonate