Oh, and what is it called when you change from a solid to a gas without it at any instant being a liquid?  Any other information around this item would really help my case study!
218141
At about 1000 degC the surface of a discrete diamond will form a microscopic layer of carbon. The carbon oxidizes to CO2 more readily than does diamond and thus a very hot diamond in oxygen could indeed appear to "evaporate." However a diamond will not support combustion in the conventional sense any more than solid graphite will because the vapor pressure is too low except at ultra-high temperatures. Obviously, porous carbon in the form of charcoal does support embrous deflagration because\nof the high surface area and insulating properties of the \nfuel/air matrix. The same is undoubtedly true of diamod dust, which is somewhat less reactive than graphite.
442422
I answered your previous post....  It seems like you don't understand the process of evaporation (turning from liquid to gas).  For example:\nAt 100 degreesC, water can be a gas, a liquid, or both.  However, as a gas at 100C, water vapor contains more energy than liquid water at 100C.  The process of evaporation (turning liquid into gas) requires energy that is not registered as an increase in temperature.  Each change in state (solid to liquid, liquid to gas) requires and "extra boost" of energy not registered as temperature to the material changing states. (Also think about ice water...)\nSo, when the the compressed liquid refrigerant is allowed to expand and turn into gas (evaporation) the surrounding energy within the refrigerator "boils" the the refrigerant giving the refrigerant the energy to turn into a gas...\nThis whole process would not be possible without the compressor.\nThe refrigerant gas, normally pure ammonia, boils at       -27C @ ambient pressure.  But through compression it is turned into liquid at room temp.  But when it is allowed to expand in the coils within the refrigerator it quickly boils turning into a gas "absorbing" the required energy from interior of the refrigerator....  So, if some how the inside of the refrigerator was -30C the liquid ammonia would fail to turn into a gas and the liquid amonia would actually be warming the interior since it was initially a liquid at room temp....
74361
Did you spell it correctly?  Is it zhu rong (a gas).  What subject?  I typed in "zhu-rong gas" into Yahoo Search and came up with "a novel genetic algorithm".  #2 and 4
484779
here are some helpful hints:  both sublimation and depositation are dealing with phase changes.\nsublimation is going directly from solid to gas.  depositation is going directly from gas to solid.\n\nusually, phase changes occur in three steps:  solid to liquid to gas or gas to liquid to solid.  \n\nhope you can use this information to find some similarities and differences.
470117
Drying of solids can be done by vaccum pump. The wet solid is placed in a closed container (ofcourse with one outlet) and the air in it is pumped out by using a vaccum pump (it is just like the pump which is used pump water from wells)\n\nGases are dried by passing over drying agents like sulfuric acid, phosphorus pentoxide, calcium chloride etc., The choice depends on which gas you are going to dry. For example to dry ammonia none of the above mentioned can be used as they react with ammonia. You need quick lime to dry it.
470292
I am not sure if this is what you are looking for??? but try this link\nhttp://www.chm.davidson.edu/ChemistryApplets/GasLaws/Pressure.html
132438
u see,when a solid is heated to a certain extent it melts into liquid,and further heated it becomes a vapour,when it is heated to a greater extent,the molecules break up into atoms and atoms into very minute states.these form a cloud of particles which is called plasma.\n          for ex.,the temp. of stars is upto millions of degrees hence the plasma is present and also known as fourth state of matter.\n        i hope u got it!!!
662579
Wrong. There is the critical temperature/pressure up to which gas and liquid behave differently. Above these conditions, there cannot exist a liquid phase. Rather than speaking about gaseous phase, this state is called fluid. This state is also called supra-critical.\n\nBasically what happens is that the attractive forces in the liquid diminish as the critical point is approached, until the liquid behaves just like the vapour. The evaporation heat becomes zero.
549716
You know that in a solid, the molecules wiggle in place. In a liquid, they move more and slide over each other. In a gas, the molecules bounce around and move very fast. The difference between the phases is a difference in how the molecules move. \nTherefore, if you want to make matter change phase, you have to make its molecules move differently. \nHow do you make a molecule move faster? It is simple. Remember that heat is the energy of moving molecules. To make a molecule move faster you have to heat it. \nHow do you make a molecule move more slowly? To make a molecule move more slowly, you have to take heat away.\nhttp://www.dmturner.org/Teacher/Library/4thText/MatPart5.html\n-----------------------------\nPhase change: The physical change of matter from one phase to another. A phase change takes place because the particles of a substance gain or lose energy, causing them to change their motion. \nhttp://www.iadeaf.k12.ia.us/Phases%20of%20Matter.htm
14873
first of all, the experiment has not been done yet, we have not been able to reach absolute zero yet.  gases liquids and solids are properties of atoms and their compounds and have to do with intermolecular forces. in liquids and solids, the atoms are touching(solids they are stuck in place liquids they slide over each other) but regardless, 2 electrons(both being negatively charged) can never touch. that doesnt mean they are a gas, because these phases of matter do not apply to plain electrons. subatomic particles do not experience these phases or phase changes. At absolute zero(which hasnt been reached and thus is still theoretical), all matter would stop moving, so the electrons would stop moving and lose all kinetic energy.
438883
Could be Liquid Gas. Need more info.
137373
Deposition is the answer.  Sublimation only refers to the process of solid going to gas.
225868
Actually, the CO2 is not in liquid form.  The CO2 molecules are trapped in the liquid.  That is why you can actually see the CO2 rise to the top of the soda.\n\nWhen you shake the bottle, you are releasing a large volume of the CO2 molecules.  However, you might wonder why the pressure just stays the same since nothing has been added to the bottle.  What's the difference between the CO2 molecules being in the liquid or in the air space above it?  Quite a bit of difference.\n\nWhen the CO2 is in the liquid, it is not able to expand like  a gas.  It does take up space in the liquid, but the liquid keeps it in a more confined space.  When the CO2 escapes the liquid, it now fills the air space as a gas pushing in all directions.  It is now able to expand like a normal gas which is why you get more pressure.
448430
first blank=gas\nsecond blank=liquid\nthird blank=solids\nfourth blank=congruent diameter
382809
Carbon at room temperature and pressure is a solid, not a gas. If you raised its temperature enough to make it a gas, it would become highly reactive and would be too hot for you to breathe.
129839
Basically its just when something goes from a liquid to a solid the entropy decreases and so you show the decrease in entropy values which should be in your chemistry. And when something goes from a solid to a liquid, the entropy increases and liquid to a gas, it increases. You should use the entropy values and show the change between the states. That would be the work I would show
551990
ok--i'm not completely sure about this--but i can at least try-- *cough cough*unlike some people*cough*cough*catweazle*\n\nwe did this type of stuff last year.  but i think that you might want to use the ideal gas law?? we always called it pervnert... PV=nRT... does this sound familiar?    \n\nif not, i suggest asking your teacher, or some other knowledgable chemistry person.\n\ni hope this helps!