Title : Optionnel

Text : The basic unit of an element is called an atom. An atom is the smallest building block that you can cut an element into without the element breaking down into a lighter element. Two ways that atoms can be broken down are through nuclear fission or radioactive decay. A chemical compound is a substance made up of two or more elements. Chaque paragraphe sera un test.

Save test : Utilisez cette option si vous souhaitez partager ce test de dactylographie (uniquement pour les utilisateurs authentifiés).