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A cooling curve of naphthalene from liquid to solid. A cooling curve is a line graph that represents the change of phase of matter, typically from a gas to a solid or a liquid to a solid. The independent variable (X-axis) is time and the dependent variable (Y-axis) is temperature. [1] Below is an example of a cooling curve used in castings.
A cooling bath or ice bath, in laboratory chemistry practice, is a liquid mixture which is used to maintain low temperatures, typically between 13 °C and −196 °C. These low temperatures are used to collect liquids after distillation , to remove solvents using a rotary evaporator , or to perform a chemical reaction below room temperature ...
The upper curve is the line of liquidus, and the lower curve is the line of solidus. In chemistry , materials science , and physics , the liquidus temperature specifies the temperature above which a material is completely liquid, [ 2 ] and the maximum temperature at which crystals can co-exist with the melt in thermodynamic equilibrium .
There are two types of continuous cooling diagrams drawn for practical purposes. Type 1: This is the plot beginning with the transformation start point, cooling with a specific transformation fraction and ending with a transformation finish temperature for all products against transformation time for each cooling curve.
English: Cooling curves of chocolate at different degrees of temper, as a temper meter would record them. The Y axis shows the temperature in degrees centigrade; the X axis the progress of time, without units.
Retrieved from "https://en.wikipedia.org/w/index.php?title=Cooling_curves&oldid=264931021"This page was last edited on 18 January 2009, at 20:22 (UTC). (UTC).
Thus, the liquid–liquid critical point in a two-component system must satisfy two conditions: the condition of the spinodal curve (the second derivative of the free energy with respect to concentration must equal zero), and the extremum condition (the third derivative of the free energy with respect to concentration must also equal zero or ...
While the definition of sublimation is simple, there is often confusion as to what counts as a sublimation. False correspondence with vaporization Vaporization (from liquid to gas) is divided into two types: vaporization on the surface of the liquid is called evaporation , and vaporization at the boiling point with formation of bubbles in the ...