Question

the diagram shows an oxygen molecule and a water molecule

oxygen molecule water molecule

how is the molecule of water different from the molecule of oxygen?

a. only the water molecule contains oxygen.

b. only the water molecule has covalent bonds.

c. only the water molecule has protons and neutrons.

d. only the water molecule is made of two different elements.

Explanation:

• Analyze each option:
• Option A: Both oxygen (O₂) and water (H₂O) contain oxygen atoms, so A is wrong.
• Option B: Oxygen molecule (O₂) has a double bond between two O atoms, and water (H₂O) has single bonds between O and H atoms. So both have covalent bonds, B is wrong.
• Option C: Oxygen molecule (O₂) is made of two identical O atoms (diatomic, non - polar), water (H₂O) has two different types of atoms (H and O) and is polar. So only water molecule has different types of atoms, C is correct.
• Option D: Both O₂ and H₂O are made of non - metal atoms (O, H are non - metals), so D is wrong.

Answer:

C. Only the water molecule has different types of atoms.