Study guide ch 9 early version

The document discusses key information provided by an element's location on the periodic table. It explains that the periodic table columns called groups tell us an element's chemical and physical properties as well as the number of electrons in its outer shell. The document also states that an element's atomic number tells the number of protons and its atomic mass tells the number of protons and neutrons. It recommends an interactive website that covers all topics likely to be on a test of the periodic table.