Test Index

BECE Science 2019 Paper

Question : 6

Total: 40

Solution:

Concept:

A compound is a substance formed when two or more different elements are chemically combined in fixed proportions.

Explanation:

Hydrogen, nitrogen, and oxygen exist as molecules of single elements:

\mathrm{H}_2

\mathrm{N}_2

, and

\mathrm{O}_2

Water is made of two different elements, hydrogen and oxygen, chemically combined as

\mathrm{H}_2\mathrm{O}

Therefore, water is a compound.

Answer:

D. Water

Go to Question:

Prev Question

Next Question