A compound is a pure substance that is made from more than one element. In a compound, elements are chemically bonded together, which makes it very difficult to separate them.

The Elements Used in Steel Carbon (C): Carbon, a nonmetallic element, forms a number of organic and inorganic compounds and can be found in coal, petroleum and limestone.

NEWS 22 May 2024 Element from the periodic table’s far reaches coaxed into elusive compound Chemists achieve synthetic feat with radioactive promethium for the first time.

A compound contains atoms of different elements, chemically joined together. Compounds form in chemical reactions, and you need other chemical reactions to separate a compound into its elements.