14. Describe how a covalent bond holds two atoms together.
A pair of electrons is attracted to both nuclei of the two atoms bonded together.
15. What property of the two atoms in a covalent bond determines whether or not the bond will be
polar?
electronegativity
16. How can electronegativity be used to distinguish between an ionic bond and a covalent bond?
The difference between the electronegativity of the two atoms in a bond will
determine whether the bond is ionic or covalent. If the difference in
electronegativity is greater than 1.7, the bond is considered ionic.
17. What is unique about the bonding properties of carbon?
A carbon atom can form four covalent bonds. It also bonds with other carbon atoms
to form long-chain molecules of different sizes and shapes