Hydrogen : Get to Know an Atom

Helium : Hey, Cool It!

Boron : A Star Is Boron

Carbon : Good Conduct Award

Nitrogen : Fixin' to Use Some Nitrogen

Oxygen : Global Cooling - On the Trail of Cavendish

Fluorine : Try the Fluorine Tooth Test

Neon : Even Neon Gets Excited

Sodium : Hot Ice

Magnesium : Trick Birthday Candles - Crackpot Crystals

Aluminum : Curses-Foiled Again!

Silicon : Don't Sand So Close to Me - Fast-Track Fossils

Phosphorus : Playing Cat Detective

Sulfur : Save That Silver!

Chlorine : "I'll Have an Egg Float"

Calcium : Not Such a Softie

Iron : Burning Iron

Copper : May the Force Be with You

Zinc : Did You Wind the Potato Clock?

Tin : Is That a Tin "Tin Can"?

Bonus Activity: Because You're Worth It : "DIRTY DOZEN" Arsenic ; Strontium; Cadmium; Cesium; Mercury; Lead; Polonium; Radon; Francium; Radium; Uranium; Plutonium.

Hydrogen

Helium

Boron

Carbon

Nitrogen

Oxygen

Fluorine

Neon

Sodium

Magnesium

Aluminum

Silicon

Phosphorus

Sulfur

Chlorine

Calcium

Iron

Copper

Zinc

Tin

The "dirty dozen". Arsenic ; Strontium ; Cadmium ; Cesium ; Mercury ; Lead ; Polonium ; Radon ; Francium ; Radium ; Uranium ; Plutonium.