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. Then hunt for some elements commonly found around the home. The Sacagawea dollar looks like gold, but it is actually made of copper, zinc, manganese, and nickel. 34 Two meteor showers and two gas giants dominate the night sky this month. The constellation Draco, the Dragon, is a highlight for the backyard observer.