H2O molecules can be in several different states at 0°C. The first picture depicts ice at 0°C, but you can also have water and water vapour at 0°C too.
Water vapour isn’t really applicable here, unless you’re talking about very low pressures. Although you could consider it a component in a mixed gas, it’s not really gaseous water. The true gaseous form of water is steam. Water vapour is more like water that has been dissolved in the atmosphere.
By analogy: sugar is solid at room temperature. But you can dissolve it in water. Have you converted the sugar into a liquid? No. Because sugar is a liquid only at temperatures above 160°C. But the resulting mixture is liquid.
Agreed that vapour doesn’t really play in to this, but I knew if I didn’t mention it someone would come in and ‘correct’ me. So I included it, and someone still came in and ‘corrected’ me.
My main point, that I didn’t make very well, is that I wanted to ‘correct’ the meme that both ice and liquid water can be at 0°C.
Technically correct is the best kind of correct.
Best way to start a conversation on the internet is to be nearly correct. ;)
*good-natured ackshuallying intensifies*
Also particles at 0 K vs 0.001 K.
Stares in zero-point energy state…
Supercooled water is a thing and it’s pretty cool (no pun intended)…
https://youtube.com/watch?v=_9N-Y2CyYhM
When you keep water still and cool it to below a few degrees below freezing point, it stays as water but when you give a physical shock to it, it freezes over! Like getting a bunch of Harlem shaking soliders in line.
They get delirious.
I know the Harlem Shake was a fad many would like to forget, but these stills were from the first video version of it that I saw and I thought it was pretty cool the Norwegian Army had a pretty sweet sense of humor about it.
For nostalgia, here’s the video if anyone wants to take a travel back in time! - https://www.youtube.com/watch?v=4hpEnLtqUDg
Harlem Shake was the coolest hype in existence.
One of the comments on the video is on point. I miss that era of the internet. It seemed so much more innocent, peaceful and heartwarming than it is now. 😞
A conga line might fit the second picture even better.
