One example of a compound is steel unlike a mixture (for example a salad) it looks uniform throughout. In the case of steel, it is often a compound of Iron (Fe), Carbon (C), and in some cases a few other types of metals.
A chemical compound is a chemical substance composed of many identical molecules composed of atoms from more than one element held together by chemical bonds. A molecule consisting of atoms of only one element is therefore not a compound.
A pure chemical compound is a chemical substance that is composed of a particular set of molecules or ions that are chemically bonded. Two or more elements combined into one substance through a chemical reaction, such as water, form a chemical compound.
