Properties of Covalent Bonds

Which of the following is an example of a small molecule?

• Diamond

• H2O

• Silicon dioxide

• Graphite

Tags

NGSS.MS-PS1-1

What type of structure do diamond and graphite have?

• Simple molecular structure

• Ionic structure

• Metallic structure

• Giant covalent structure

Tags

NGSS.HS-PS1-3

Why do substances with giant covalent structures have high melting points?

• Because they are soluble in water

• Because they have strong covalent bonds that require large amounts of energy to overcome

• Because they have weak covalent bonds

• Because they have free charged particles

Tags

NGSS.HS-PS1-4

Which of the following substances is insoluble in water?

• H2O

• NH3

• CO2

• Graphite

Why can't most substances with giant covalent structures conduct electricity?

• Because they have low melting points

• Because they have free charged particles that are free to move

• Because they are soluble in water

• Because they do not have charged particles that are free to move