Chemische Stoffe -hier Kochsalz - bestehen letztendlich nur aus immer wiederkehrenden kleinsten Baustein, den Atomen. Die Atome sind oft kugelförmig dargestellt.
Public Domain: CCO 1.0: No Copyright. The person who associated a work with this deed has dedicated the work to the public domain by waiving all of his or her rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.Link to the license => https://creativecommons.org/publicdomain/zero/1.0/