Covalent Bonding

What is a covalent bond?

• The force that holds atoms or ions together

• A chemical bond in which two atoms share a pair of valence electrons

• The force that holds cations and anions together

• A neutral group of atoms

Which of the following molecules is NOT held together by a COVALENT bond?

• NaCl

• N₂

• O₂

• CO₂

Attractions between polar molecules are _________ than attractions between nonpolar molecules.

• Worse

• Weaker

• Stronger

• Better

Triple bonds are formed when atoms share _____ pairs of valence electrons.

• two

• four

• three

• six

The type of atoms in a molecule and its shape are factors that determine _____________.

• Whether it is big or small

• Whether it has covalent or ionic bonds

• whether it has a positive or negative charge

• Whether it is polar or nonpolar

A covalent bond in which electrons are not shared equally is called __________

• An ionic covalent bond

• A nonpolar covalent bond

• A polar covalent bond

• A molecule

__________ explain why nitrogen can be stored as a liquid at low temperatures and high pressures.

• Covalent bonds

• Attractions among polar molecules

• Attractions among nonpolar molecules

• Ionic bonds

Which of the following shows an electron dot diagram for CO₂

• 
• 
• 
• 

What does diatomic mean?

• 20 atoms

• 1 atom

• 2 molecules

• 2 atoms