Beyond the field of the chemical industry, where chemistry is the core business for the production of synthetic or biosourced chemical, mineral and organic raw materials and which supplies most sectors of the economy, chemists are present in many other areas: health,. Chemistry allows us to understand the nature and functioning of the elements, atoms and molecules that make up all substances, from everyday materials to medicines, construction materials and electronic products... In physical chemistry, you will see the different states of molecules (solid, liquid, and gas) and you will learn to describe and predict them. In analytical chemistry, you will discover all the modern techniques that allow us to see molecules to better study them.