States of Matter Flashcards
Characteristic/s of solids
I. Molecules are packed closely
II. Highly compressible
III. Flows and assumes shape of container
I. Molecules are packed closely
A compressible fluid and has no definite shape or volume, but occupies the entire container
Gas
Law that defines the relationship between the volume of a gas (V) and pressure (P) if the temperature and amount of gas are held constant
Boyle’s Law
Which gas law relates volumes and temperature at constant pressure?
Charles’ Law
A sample of gas occupies 12L under a pressure of 1.2 atm. What would its volume be if the pressure were increased to 2.4 atm?
6L
What is the equation of the Ideal Gas Law?
PV=nRT
Molar gas constant, R has a value of?
0.0821 L·atm·K-1·mol-1
Which of the following statements is correct?
A. Gases are liquefied at low temperature and low pressure
B. Gases are liquefied at high temperature and high pressure
C. Gases are liquefied at low temperature and high pressure
D. Gases are liquefied at high temperature and low pressure
C. Gases are liquefied at low temperature and high pressure
Which state of matter have molecules that are close but are randomly arranged?
Liquids
Measure of the inward forces that must be overcome to expand the surface area of a liquid
Surface tension
Which of the following is TRUE regarding solids?
A. Solids are less dense than gases and liquids
B. Most solids melt upon cooling
C. Solids are very compressible
D. Solids are rigid and have definite shapes
D. Solids are rigid and have definite shapes
Crystalline solids:
I. have definite shape
II. orderly arranged
III. have sharp melting points
I, II, and III:
Crystalline solids have definite shapes, are orderly arranged, and have sharp melting points
Type of unit cell exhibited by NaCl
Cubic
Ability of a compound to crystallize as more than one distinct crystalline species with different internal lattices
Polymorphism
Different polymorphic forms of a substance usually exhibit different:
I. X-ray diffraction patterns
II. Stability activity
III. Dissolution behavior
I, II, and III:
Different polymorphic forms of a substance usually exhibit different x-ray diffraction patterns and physical properties (stability, and dissolution behavior)
An example of a solid which exists in triclinic form
Boric acid
An example of a solid which exists in rhombic form
Iodine
An example of a solid which exists in monoclinic form
Sucrose
It is the third type of liquid crystals
Cholesteric (chiral nematic state)
Complex formed when solvent is incorporated within the crystal lattice
Solvate
The most important property of the solid state
Definite shape (rigid) and definite volume
Which of the following phrases best described amorphous solids?
A. Possess great disorder and are devoid of any organized structure
B. Do not occur in characteristic geometrical shapes
C. Show fracture in an irregular manner when hammered gently
D. All of the Choices
All of the choices
