His mother, Maria, worked hard to support his education and career. One sidebar explains how atomic theory relates to the Periodic Table. A second mentions the contributions of some women scientists to the study of elements. 15 Use the Periodic Table to solve a mystery. 18 Scientists use particle accelerators to create superheavy elements.
Sidebars explain radioactive decay, isotopes, half-life, and how accelerators work.
Solve a puzzle using clues based on your knowledge of the elements and the Periodic Table. 26 Sodium is always found in combination with other elements, as in sodium chloride, or salt. The balance of salt in the human body affects performance and health. Sodium salts preserve mummies. Build an apparatus to separate water molecules into hydrogen and oxygen.