The purpose of this Chemistry Application for Windows is for high school chemistry students to learn the number of protons, electrons, neutrons, valence electrons, and the period of the 118 chemical elements. In each play, up to 9 elements selected at random can be requested. The number of plays is unlimited. This chemistry application is for computers using Windows 10 or newer.Ceres-Science teacher support: science@ceressoft.netFor more information about other chemistry products created by Cere