Timeline for How hard is the hardest ice in the solar system? Is it in Pluto's ice mountains?
Current License: CC BY-SA 4.0
14 events
| when toggle format | what | by | license | comment | |
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| Oct 16, 2020 at 2:25 | comment | added | Camille Goudeseune | Quite possibly, but I'm way out of my depth, to misuse a metaphor. I've already asked the pros. | |
| Oct 16, 2020 at 1:00 | comment | added | Oscar Lanzi | Why not water ice? Wouldn't the hydrogen bonding in water ice make it relatively hard compared with a nonpolar compound held together only by dispersion forces? | |
| Oct 15, 2020 at 13:48 | comment | added | called2voyage♦ | Good work! Thanks for putting in the extra effort to make this a fantastic answer! | |
| Oct 14, 2020 at 17:50 | history | edited | Camille Goudeseune | CC BY-SA 4.0 |
a conventional ice
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| Oct 14, 2020 at 16:17 | history | notice removed | called2voyage♦ | ||
| Oct 14, 2020 at 16:12 | history | edited | Camille Goudeseune | CC BY-SA 4.0 |
meaning of ice
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| Oct 14, 2020 at 13:31 | history | notice added | called2voyage♦ | Needs citation | |
| Oct 14, 2020 at 12:51 | comment | added | Jon Custer | @uhoh - to my knowledge, liquid carbon is not well studied. Both silicon and germanium go from the four-fold coordinated semiconducting diamond cubic solid structure to an 8- to 12-fold coordinated metallic liquid. | |
| Oct 14, 2020 at 10:51 | comment | added | Cornelis | @uhoh Hydrocarbon molecules are trannsformed into diamond and hydrogen, how can you explain that as ice forming , phase transition from liquid to soliid ? | |
| Oct 12, 2020 at 16:17 | comment | added | WaterMolecule | Wikipedia says: "The solid phases of several other [non-water] volatile substances are also referred to as ices...if its melting point lies above or around 100 K." Diamond melts only above 4000 K, so I doubt that solid allotropes of carbon, including diamond, are considered an "ice" by any scientific community. But, thanks for prompting me to read research on phase transitions in carbon! This paper ( doi.org/10.1103/PhysRevLett.82.4659 ) claims two liquid phases: one diamond-like (sp3) and one with triple bonds (sp). They say graphite-like (sp2) liquid is unstable. | |
| Oct 12, 2020 at 7:03 | comment | added | uhoh | Well I don't know about the corundum condundrum but carborundum is also quite a sic little semiconductor, and yet it's a binary ice so that's won't do. btw apparently neither diamond nor carborundum actually melt, so this gets curiouser and curiouser! | |
| Oct 12, 2020 at 6:27 | comment | added | Camille Goudeseune | I won't claim "water has memory" homeopathy :-). Maybe constrain your question to polyatomic compounds to avoid this crystalline corundum, ahem, condundrum? | |
| Oct 12, 2020 at 5:48 | comment | added | uhoh | Hmm... Hmm... :-) Okay. Diamond is the name of one of many solid forms of carbon, and the name of the lattice that silicon and germanium share as well. But when liquid, does it ever retain any "diamondness"? Some kind of extremely long short-range order? | |
| Oct 12, 2020 at 5:34 | history | answered | Camille Goudeseune | CC BY-SA 4.0 |