They can't help themselves, even at an early age. The draw of the lab, the feel of the tube, the smell of a freshly oxidized reaction lures them irresistibly to become a junior chemhead and study:
Atoms & Molecules
Simple Reactions
Water & Hydrology
Bubbles & Bubbleology
Crystals & OOH-ology
Polymers & Glop-ology
And much, much more!