Covalent Bond Review

Which element forms a diatomic molecule using a triple covalent bond?

• C
• N
• O
• P

CO, carbon monoxide, obeys the octet rule using a coordinate covalent bond. What is a coordinate covalent bond?

• both bonding electrons come from one atom
• a very strong bond.
• one electron serves as its own pair
• CO is an exception to the octet rule

How many bonds does carbon have to create in order to satisfy the octet rule

• 1
• 2
• 3
• 4

Which bond would be the least polar?

• H-F
• H-O
• H-H
• H-Br

Tags

NGSS.HS-PS2-4

Which bond would be the most polar?

• H-I
• H-Br
• H-Cl
• H-F

Tags

NGSS.HS-PS1-1

What is a polar molecule?

• One that has a partial negatitive on one end and a partial positive on the other
• a molecule with little vibration
• an ionic compound
• the nonpolar bonds are arranged sequentially

What is the force that holds a molecule together?

• Electrostatic
• a sea of electrons
• electron molecular orbitals
• the strong nuclear force

Tags

NGSS.HS-PS1-3

NGSS.HS-PS2-4

Which compound below would be nonpolar?

• HF
• H₂O
• Br₂
• HBr

For the structural formula shown, what is the chemical formula?

• NO
• N₂O₂
• NO₂
• N₂O

How do covalent bonds form?

• Donating & receiving valence e- between atoms.
• Opposite slight charges attract each other between compounds.
• Scientists are still not sure how they form.
• Sharing valence e- between atoms.

Tags

NGSS.HS-PS1-1