Question

Write true or false. Correct the false statement.

A compound is made up of one element.

• A. True
• B. False

Answer 1

The correct option is B False

• A compound is a substance made up of two or more elements chemically combined in a fixed proportion by mass.
• Water $\left({\mathrm{H}}_2\mathrm{O}\right)$, for example, is a compound composed of two elements, hydrogen and oxygen, chemically combined in a fixed proportion of $1:8$by mass (Atomic masses: $$\begin{gathered} \mathrm{H}=1\mathrm{u},\mathrm{O}=16\mathrm{u}, \\ \mathrm{so}{\mathrm{H}}_2:\mathrm{O}=2\mathrm{u}:16\mathrm{u} \\ \mathrm{or}1:8 \end{gathered}$$.
• When one or more atoms of the same or different elements combine with each other chemically, a compound is formed.

Hence, the given statement is False.

Correct statement - A compound is made up of two or more different elements.