Originally posted by nihilismor [b]A molecule which is like H2O [b]
One of the most important features of the molecule (from our point of view) is that it comprises more than half of our body ... there is no other molecule which does this.
Originally posted by flexmore One of the most important features of the molecule (from our point of view) is that it comprises more than half of our body ... there is no other molecule which does this.
Brains=70% water, blood=83% water, lungs=90% water. Total is 60% of body is water!
Originally posted by nihilismor Whoopsy. I left out the main part of the question. The molecule(s) I seek has a different name for each state (ice, water, vapor.)
Some girls have the three states:
Ice - when I approach a hot babe at the pub.
Liquid - when I find out she is drunk.
Vapour - when she realize that I'm not going to pay for her next drink.
Originally posted by FabianFnas Therefore I wrote "more or less".
I suppose that even CO2 has its liquid phase in certain pressures...
Each substance have what chemists called a 'pressure-temperature phase diagram' which tells you what state a material is at certain temperatures and pressures (i.e solid, liquid, gas, supercritical fluid).
They are quite interseting and quite strange some of them.
Check out the phase daigram for nicotine it's quite odd.
The phase diagrams here are for one component systems and are very easy to understand.
Things get tricky when you have 2 or 3 component phase diagrams!
Originally posted by ChessJester Solid, Liquid and Gas states are a relationship between internal energies (at the atomic and molecular scale) which is temperature, and the bonds that hold the individual molecules together (such as hydrogen bonds).
Every substance has a B.E.C., solid, liquid, gas and plasma state.
Thats right, 5 states of matter.
Not all substances have reached ...[text shortened]... I know) but theoretically it is possible for any type of matter to reach any of those 5 states.
Originally posted by FabianFnas Aren't they all, more or less?
They are; but water is one of the few (relatively speaking, of course) substances that can be in all three states at normal atmospherice pressure, at temperatures found on Earth outside the laboratory.
Originally posted by Ponderable HAs anybody infromation about liquid carbon?
Yes; the triple point of C is at about 100 bar, so you'll need at least that kind of pressure to get it liquid. It won't go liquid at atmospheric pressure.
The molecule configuration changes during change of state (e.g evaporation) The intermolecular bonds of the molecule berak and so its no longer H2O but its seperated into hydrogen and oxygen.
Originally posted by Gabriel Khwela The molecule configuration changes during change of state (e.g evaporation) The intermolecular bonds of the molecule berak and so its no longer H2O but its seperated into hydrogen and oxygen.
That is absolutely not true.
People like you make me feel secure. They don't dare fire a science teacher with a science degree who actually knows science.
16 Jul '08 17:252 edits
A molecule which is like H2O
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