Spelling Theme Unit: Periodic Table
Here is a themed fourth grade spelling unit all about the Periodic Table! Words in this list include: elements, science, mercury, sulfur, platinum, nitrogen, periodic table, neon, gold, zinc, silicon, lead, sodium, helium, aluminum, gases, hydrogen, oxygen, atomic number, carbon, nickel, copper, silver, magnesium, and metals.
Here's the main page for the 4th grade STW spelling series. From here you'll be able to link to any of the 30+ Level-D spelling units.