See how to do electrolysis of water with graphite (lead from a pencil). The positive side has oxygen bubble, and the negative side has hydrogen bubble. Just get a 9V dry cell battery.

Apple's iOS 26 and iPadOS 26 updates are packed with new features, and you can try them before almost everyone else. First, check Gadget Hacks' list of supported iPhone and iPad models, then follow the step-by-step guide to install the iOS/iPadOS 26 beta — no paid developer account required.
Comments
Be the first, drop a comment!