Hypophosphorous acid decomposition

From a channel Lumen includes in full: Nearly every upload is a hands-on chemical synthesis walkthrough. The transcripts consistently give reagents, quantities, apparatus, reaction chemistry and safety notes, which fits the 'lab experiments / demonstration of technique' category. The few non-procedural items (a uranium collection showcase and the 'Chemical exhibit' flame demos) are caught by title patterns. The playful titles are descriptive, not clickbait.