Covalent Bonding Practice Questions

Covalent bonds are usually formed between...

• A metal and a non-metal

• Two non-metals

• Two metals

Select the properties of simple covalent substances.

• Low melting and boiling points.

• High melting and boiling points.

• Do not conduct electricity.

• Good conductors of electricity.

According to the octet rule most elements need _______ valence electrons.

• 2
• 8
• 6
• 18

Tags

NGSS.HS-PS1-1

Hydrogen needs _____ electrons in its valence shell to be stable.

• 4
• 6
• 8
• 2

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is the correct formula for this molecule?

• NH
• N₃H
• NH₃
• NH₄

How many covalent bonds does carbon need to form in order to have a full octet?

• 2
• 3
• 4
• 5

Tags

NGSS.HS-PS1-1

Covalent compounds

• Share electrons
• transfer electrons
• contain a sea of electrons
• conduct electricity

NH₃ has how many lone pairs?

• 0

• 1

• 2

• 3

What is a diatomic element?

• a metal bonded with a nonmetal
• 2 or more nonmetals bonded together
• 2 or more metals bonded together
• 2 atoms of the same element bonded together

Complete the sentence: In covalent bonds, electrons are _______________________

• Lost

• Gained

• Halved

• Shared

Tags

NGSS.HS-PS1-2