What about a ball of snow? Why does it melt below freezing? What's your common sense answer?
This post was edited by O-uknow at June 15, 2018 10:43 PM MDT
No, there's more to this than what's melted refreezing. You can't save a snowball either in a freezer and that was never slushy. No liquid parts to refreeze and still you end up with an ice ball not compacted snow crystals and it all happens below freezing.
This post was edited by O-uknow at June 15, 2018 10:41 PM MDT
Well, methink you are right mostly but there is something called sublimation that is sort of like evaporation that helps meld it into a solid. It also shrinks and compacts it and is why ice cubes shrink in the freezer. They do not melt. I asked the wrong question. It should have been "Why does a snowball turn into solid ice in the freezer".
Ok, it's called triple point. There is a temperature defined as "freezing point of water" but it is actually the triple point of water because water can exist as gas, liquid, or solid at that temperature*. As you remove heat, the temperature does not drop, but the liquid freezes. As you add heat, the temperature does not rise, but the solid melts.
And it's done with magnets. But nobody knows anything about magnets except that there are such things.
*Below the triple point, water can be solid or gas. (That's how frozen food gets freezer burn.) Above the triple point, water can be liquid or gas.
Thriftymaid 