3 Written Questions

1. an ion made of two or more atoms.
2. a concept of chemical bonding theory that is bsed on the assumption that atoms tend to have either empty valence shells or tull valence shells of eight electrons
3. an atom, radical, or molecule that has gained or lost one or more electrons and has a negative or positive charge.

3 Multiple Choice Questions

1. an ion that has a negative charge.
   1. anion
   2. salt
   3. ion
   4. cation
2. an ion that has a positive charge.
   1. ion
   2. cation
   3. anion
   4. salt
3. the regular pattern in which a crystal is arranged
   1. salt
   2. octet rule
   3. crystal lattice
   4. cation

3 True/False Questions

1. salt → an atom, radical, or molecule that has gained or lost one or more electrons and has a negative or positive charge.

   True        False

2. unit cell → an ion that has a negative charge.

   True        False

3. lattice energy → the energy associated with constructing a crystal lattice relative to the energy of all constituent atoms separated by infinite distances.

   True        False