Chemical elements Elements Éléments chimiques 21 elements (chemical substances) 20 Chemistry 11 SCIENCE 11 Chemicals and Drugs 10 Composés inorganiques 10 Inorganic Chemicals 10 Inorganic compounds 10 Inorganic 6 Chimie 5 Classification périodique des éléments 5 Metals 5 Métaux 5 Periodic table of the elements 5 Phenomena and Processes 5 metal 5 periodic table 5 �El�ements chimiques 4 Chemical Actions and Uses 4 Elements, Radioactive 4 Delivery of Health Care 3 Disease 3 Diseases 3 Environment and Public Health 3 Environmental Pollutants 3 Éléments traces métalliques 3 Gases 3 Gaz 3