Part of Chemistry (Single Science) The nature of substances and chemical reactions This diagram shows that one carbon atom and two oxygen atoms combine to make up the units of carbon dioxide. Its ...

Everything we can see and touch, and quite a lot that we can’t as well, is made of tiny particles called atoms. Some substances, like particles of this iron, contain only one kind of atom. Iron is an ...

The study of elements and compounds is an important part of the science of chemistry. A compound is substance made up of different elements joined together by a chemical bond. Find out more about ...

In chemistry, the chemical nomenclature of ionic and molecular compounds uses a systematic approach of prefixes to indicate the number of each element present in the compound. This chemical naming of ...