What Are Covalent Bonds

This video explains covalent bonds, their formation, and characteristics. It contrasts covalent and ionic bonding, describes nonmetals' role in covalent bonds, and illustrates how to represent these bonds. The video also covers types of covalent structures, including small molecules and giant compounds like diamond, and discusses allotropes and examples of covalent compounds.

What type of bonding occurs when nonmetals combine with other nonmetals?

• Metallic bonding

• Ionic bonding

• Covalent bonding

• Hydrogen bonding

How are covalent bonds represented in a displayed formula?

• With a wavy line

• With a straight line

• With a zigzag line

• With a dotted line

Which of the following is a characteristic of small covalent molecules?

• Form giant lattices

• Low boiling points

• Conduct electricity

• High melting points

What is a common example of a giant covalent structure made of carbon?

• Diamond

• Methane

• Silicon dioxide

• Graphite

What are allotropes?

• Compounds with similar properties

• Different structures of the same element

• Elements with identical atomic numbers

• Different elements with the same structure

Which element tends to form giant covalent compounds along with carbon?

• Silicon

• Hydrogen

• Oxygen

• Nitrogen

What is the shape of a C70 fullerene molecule?

• Cube

• Pyramid

• Rugby ball

• Sphere