18 Questions
What is the number of degrees of freedom in a system consisting of one phase and one component?
2
At the triple point, what is the number of degrees of freedom of the system?
0
What is the condition of a system that can be supercooled by carefully eliminating solid particles?
Metastable
What is the number of phases in a system at the triple point?
3
What is the number of components in a system at the triple point?
1
What is the condition of a system that has two degrees of freedom?
Bivariant
What is the number of degrees of freedom for a system containing a pure gas?
2
What is the term for a system with F = 0?
Nonvariant
What is the minimum number of variables that must be specified to define a system containing a mixture of two or more gases?
3
What is the degree of freedom for a system with a one-component system like the dissociation of ammonium chloride?
0
What is the equation that represents the phase rule?
F = C - P + 2
What is the term for a system with F = 1?
Univariant
What is the relationship between the vapour pressure of a metastable phase and that of a stable phase at the same temperature?
The vapour pressure of the metastable phase is always higher than that of the stable phase.
What is the term used to describe the occurrence of the same substance in more than one crystalline form?
Polymorphism
What is the term used to describe the individual crystalline forms of an element?
Allotropes
What type of allotropy involves a reversible change between two polymorphic forms at a definite temperature?
Enantiotropy
What is the temperature at which two polymorphic forms of an element have a common vapour pressure?
Transition temperature
What is the term used to describe the subdivision of allotropy into three types?
Allotropy
Understand the concept of phase diagrams and how they relate to the triple point of a substance. Learn how to analyze the conditions for stable existence of different phases of matter.
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