Is there a substance that solidifies at a higher temperature than it liquifies?
348388
Yes - type 1 collagen is liquid at 0 degrees C and solid at 37 degrees C.
742562
The melting point is the same as the freezing point, usually. The freezing/melting point is usually lowered to a lower temperature by impurities due to the impurities "messing up" the crystal lattice of the solid phase. The crystal lattice cannot form as easily with a lot of garbage present, so it requires a lower temperature to accomplish freezing. Likewise, the polluted crystal lattice will melt easier and thus it will melt at a lower temperature. This is why we put anti-freeze into our car radiators, to keep your engine block from cracking from the freezing of the coolant water during freezing weather. I hope this helps
149897
Depends on the temperature. At a guess at melting point not that different from solid aluminum.
847949
Polar.  The stronger the intermolecular forces, the higher the melting point.
867788
Liquid.  Melting point is 600.65K
947107
There are thermally-responsive hydrogels - not specifically gellatins (I think that term only applies to natural gels) - that will crystallize with temperature change.  Poly(N-isopropy acrylamide) (or PNIPA) is a commonly used gel that has a glass transition temperature around 34°C.
184098
has to do with intermolecular bonds. The bonds that hold a solid together are more ridgid than that of a liquid.
25625
It Increases the melting. Try It to find out
751854
It does completely. High melting points arise when the atoms of a substance interact and form strong inter-molecular bonds. These are weaker than ionic bonds and covalent bonds but work on the same principle. If the distance between the two atoms is great, the bond strength is low and vice versa. Thus, since potassium has a larger atomic radius, the inter-molecular bonds are weak and it is easier to melt a sample of potassium.
130807
The temperature where the substance turns from a solid to a liquid. The melting temperature of ice is 31.9999 degrees Fahrenheit.\n\nThe melting point for gold would be much higher as it must be very hot for gold to turn to a liquid.
16969
It's a solid, so it's already frozen. Heat it up enough, and it will melt.
1111193
In my years of teaching, it seems that everything in chemistry is related to stability.  The network solids are very stable structures and form strong bonds.  \n\nA melting point in chemical terms is when the physical property of heat is capable of changing the configuration of the bonds.  This configuration will be resistant to change if it is in a stable state, because the change to the liquid form is an increase in entropy (chaos).  Therefore a high temperature would be required to change the form.
948057
Room temperature Seems like a trick question to to unless they are asking what physical state it is in at room temperature then that would be solid
859083
basically, the melting point of the substances can tell us the submicroscopic interparticle forces of a compound. the higher the melting point means that the stronger the submicroscopic interparticle forces it has and vice versa....
767956
Carbon dioxide liquefies/boiles at -57°C and solidifies/melts at -78 °C . People use these carbon dioxide properties, to test other properties. One such  test is impact testing of metals, at low temperature.  \n\nSolidified/Solid carbon dioxide is called dry-ice.  The  test using solid carbon dioxide is called  dry-ice test.
1158929
The critical temperature, Tc, of a material is the temperature above which distinct liquid and gas phases do not exist. As the critical temperature is approached, the properties of the gas and liquid phases become the same.
905373
if u are referring to expansion due to heating than the order of expansion of the substances from lowest to largest is solid, liquids, than gases. But a solid's expansion is extremely low, almost impossible to measure unless its a metal.