Question

Water, H2O, is a molecule made of oxygen and hydrogen. The bonds that hold water molecules together are due to shared electrons, and known as __________ bonds. In contrast, the bonds that hold NaCl molecules together are _________ bonds, arising from a charge difference between the atoms.
A) ionic; nuclear
B) covalent; ionic
C) ionic; covalent
Eliminate
D) covalent; charged

Answer 1

The correct answer would be 
B) Covalent; Ionic.

Water, H2O, is a molecule made of oxygen and hydrogen. The bonds that hold water molecules together are due to shared electrons, and known as covalent bonds. In contrast, the bonds that hold NaCl molecules together are ionic bonds, arising from a charge difference between the atoms.