Question

question 10 of 10
which option is the basic unit of water, a compound?
a. a hydrogen molecule
b. a water molecule
c. a water atom
d. a hydrogen atom

Explanation:

• A compound is made of molecules. Water (\(H_2O\)) is a compound.
• A water molecule (\(H_2O\)) is the basic unit of water.
• A hydrogen molecule (\(H_2\)) is a molecule of the element hydrogen, not of water.
• There is no such thing as a "water atom" as water is made of atoms (hydrogen and oxygen) combined into molecules.
• A hydrogen atom (\(H\)) is an atom of the element hydrogen, not the basic unit of water.

Answer:

B. A water molecule