Water freezes at 0°C. H₂O₂ freezes at a much colder -0.43°C. Wait, that’s actually almost the same. But pure H₂O₂ freezes at -11°C. The store-bought stuff is watered down, so it freezes just below zero.
PPT - Hydrogen Peroxide PowerPoint Presentation, free download - ID:6035730
Boiling is the real shocker. Water boils at 100°C. Pure H₂O₂ boils at 150°C. It takes a lot more heat to get it bubbling. It’s like the liquid equivalent of a stubborn mule.
And don’t even think of distilling it to make it pure. If you heat it too much, it explodes. Chemistry has a dark sense of humor.
Density: Heavier Than It Looks
H₂O₂ is denser than water. Liquid water is 1.0 g/mL. Pure H₂O₂ is about 1.45 g/mL. That extra oxygen adds serious weight. It’s like water wearing a lead vest.
If you could pour it into a swimming pool, it would sink to the bottom. It would form a clear, invisible layer. You’d have a pool of liquid regret waiting for you.
