Buyer re: Study Guide for Matter Test
Atomic number tells you the number of protons which = the number of electrons. It does not tell you the number of neutrons. Your description is misleading about all the particles. Plus at the bottom you say chemical and physical changes, but then you discuss physical first and chemical second which confuses the students who take a quick look. Can you switch the title around to better represent the models you represent below? Thanks!
February 26, 2014