Liz tried to think of how to explain it. "Okay, so, when people think of an explosion, they think of a bomb, right? Usually a chemical reaction that's fiery in some way. Well, with the sodium, the water is coming into contact with something extremely hot so the water will vaporize into water vapour. It does it so fast that it creates pressure in the container that's holding it which is why the container explodes... but if it was in, say, a lake or a pool, it might just spout a little water off the top, but you wouldn't have the big crash the tank I just used made." She smiled. "But, I guess you could technically make it into a bomb... when the sodium is as hot as it can get, it can actually make the atoms unstable enough that when it comes into contact with the oxygen in the water, it can create hydrogen gas... so, I mean, it could." And maybe she would keep that part to herself and not tell Rocket - hydrogen gas was very flammable.

She looked to jag and scrunched her nose. "Sorry... I kind of get excited about this sort of thing... but I know not everyone does." And she was hardcore nerding right now.