Yes, that statement is true. A compound is defined as a pure substance composed of atoms of two or more different elements chemically bonded together in a fixed ratio. In a compound, the elements are chemically combined through chemical reactions to form new substances with distinct properties from the original elements. The atoms in a compound are held together by chemical bonds, such as ionic bonds or covalent bonds. The ratio of the different elements in a compound is determined by the chemical formula of the compound.