The Elements

A Visual Exploration of Every Known Atom in the Universe

       This book had many text features. They used photographs and captions to show how each element is used.They also used graphs to show the electron filling order, atomic emission spectrum, and state of matter at a certain temperature. At the end, they had a picture of the periodic table, and it said that if an element was radioactive.

       This book made me wonder how people detect the last f+ew elements such as ununseptium and ununoctium. It also made me wonder how people knew there elements in the first place. I remember that the first periodic table had less than 65 elements, but how did they know that the elements were there?