Question

biological importance of water
1 more question to go
water is a compound because it...
contains atoms of only one element.
contains more than one bond.
contains more than one atom.
contains atoms of more than one element.

Explanation:

Step1: Recall compound definition

A compound is a substance made up of atoms of two or more different elements chemically combined in a fixed ratio.

Step2: Analyze water's composition

Water has the chemical formula $H_2O$, with hydrogen and oxygen atoms.

Step3: Evaluate options

• Option A: Water has two elements (H and O), not one.
• Option B: Having more than one bond is not the defining characteristic of a compound.
• Option C: Having more than one atom is not enough; they must be of different elements.
• Option D: Water has hydrogen and oxygen atoms, so it contains atoms of more than one element, making it a compound.

Answer:

D. contains atoms of more than one element.