30 Results
Critical Temperature and Pressure   
(Other (1))
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Boiling Point   
(Other (1))
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Vapor-Liquid Equilibrium   
(Other (1))
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Enthalpy of Fusion and Enthalpy of Vaporization   
(Other (1))
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Phase Diagrams   
(Other (1))
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Phase Transitions   
(Other (1))
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Vapor Pressure   
(Movie/Animation, Audio/Visual (5))
Pressure exerted by vapor of several organic substances is demonstrated using barometers. Molecular models of the substances are shown.
Liquefaction of Carbon Dioxide   
(Movie/Animation, Audio/Visual (4))
Dry ice is placed into an acrylic plastic cylinder. A valve is closed and pressure in the cylinder increases. When the pressure reaches 350 kPa (50 psi) it stops increasing and liquid CO2 appears.
Vapor Pressure: Drinking Bird   
(Movie/Animation, Audio/Visual (3))
A novelty store "Drinking Bird" repeatedly dips is beak into a beaker of water and then bobs back to an upright position. Visible movement of a liquid in the bird's body accompanies the bobbing; the movement is caused by changing vapor pressure of the liquid due to different temperatures at the bird's head and the bird's body.
Superconductivity   
(Movie/Animation, Audio/Visual (3))
A pellet of 1-2-3 yttrium barium copper oxide (YBa2Cu3O7-x) is cooled with liquid nitrogen. A magnet placed above the pellet is levitated. At a higher temperature the magnet rests on the pellet, but cooling once again causes the magnet to rise. The levitated magnet is spun with plastic tweezers
Critical Point of Benzene   
(Movie/Animation, Audio/Visual (3))
A sealed tube containing benzene liquid and vapor is heated. As the critical temperature is approached, the meniscus flattens. At the critical temperature the meniscus disappears, and separate liquid and vapor phases can no longer be detected.
Phase Changes   
(Movie/Animation, Audio/Visual (3))
By using a coolant at a temperature below the boiling point of the gases chlorine, bromine and iodine, the gases are condensed into liquid form.
Thermochromism: Mercury(II) Iodide   
(Movie/Animation, Audio/Visual (2))
When red-orange Mercury(II) Iodide (HgI2) is heated, it undergoes a phase transition at 126oC to a pale yellow form. As the heated sample cools, it gradually returns to the original red-orange color.
Vapor Pressure of a Mixture: Raoult's Law   
(Movie/Animation, Audio/Visual (2))
The measurement of pressure exerted by a vapor is demonstrated using barometers. Vapor pressure varies with the strength of the intermolecular forces in the liquid. In this section we will look at vapor pressure of mixtures. We can calculate the vapor pressure of a mixture using Raoult's law.
Vapor Pressure: Molecular Size   
(Movie/Animation, Audio/Visual (2))
The measurement of pressure exerted by a vapor is demonstrated using barometers. Vapor pressure varies with the strength of the intermolecular forces in the liquid.
Steam and Superheated Steam   
(Movie/Animation, Audio/Visual (2))
Water is boiled and the steam is collected and run through a coil of copper tubing. When a gas burner heats the steam coil strongly, the steam becomes superheated and is at a high enough temperature to ignite a match and react quickly with steel wool.
Boiling by Cooling   
(Movie/Animation, Audio/Visual (2))
A flask contains water and water vapor at 100C. Each time ice water is poured over the outside of the flask, the water inside the flask boils. Although the temperature of the water in the flask has decreased, in each instance boiling is observed.
Steam and Superheated Steam   
(Movie/Animation, Audio/Visual (2))
When a gas burner heats the steam coil strongly, the steam becomes superheated and is at a high enough temperature to ignite a match and react quickly with steel wool
Atmospheric Pressure   
(Movie/Animation, Audio/Visual (2))
Atmospheric pressure is used to collapse large and small metal containers.
Enthlapy-Thermodynamics   
(Movie/Animation, Audio/Visual (10))
Reactions and demonstrations the explore thermodynamic concepts.
Steam (GCMP)   
(Interactive Simulation, Software (1))
Steam: this is a resource in the collection "General Chemistry Multimedia Problems". We observe two videos of steam produced by boiling water. The steam is channeled through a copper coil which will be heated. General Chemistry Multimedia Problems ask students questions about experiments they see presented using videos and images. The questions asked apply concepts from different parts of an introductory course, encouraging students to decompartmentalize the material.
Intermolecular_Forces__Liquids_and_Solids : PhaseEnergyChanges (6 Variations)   
(Assessment Material (1))
When a liquid is transformed into its vapor at constant temperature,
Thermodynamics : EntropyPhaseChange (13 Variations)   
(Assessment Material (1))
Aluminum can be evaporated in a vacuum to form highly reflective coatings. Aluminum boils at 2792K and has a heat of vaporization of 70.0 kcal/mol. Calculate the entropy change for the vaporization of one mole of aluminum.
Thermochemistry : PhaseChanges (8 Variations)   
(Assessment Material (1))
Steam at 100oC is condensed by an ice-water mixture at 0oC. Assuming that there is still ice present when the process is over, how much ice will be melted if 10.0 g of steam is condensed? The following may be useful:
enthalpy of vaporization of water = 40.7 kJ/mol; enthalpy of fusion of water = 6.07 kJ/mol; specific heat capacity of water = 4.184 J/g•K.
Thermochemistry : PhaseChangeEnthalpy (10 Variations)   
(Assessment Material (1))
A solid melts to a liquid. Which of the following statements are true? (Assume constant pressure and a flexible container.)
Intermolecular_Forces__Liquids_and_Solids : PhaseDiagrams (6 Variations)   
(Assessment Material (1))
Match the following conditions to the physical state of the contents of the vessel.

Click here to open the phase diagram.

Matter_and_Measurement : PhaseProperties (10 Variations)   
(Assessment Material (1))
Does the following statement apply to solids, liquids, or gases?
It has a fixed volume.
Matter_and_Measurement : ElementState (10 Variations)   
(Assessment Material (1))
Identify how each of the following elements exist under normal conditions.
States of Matter   
(Activity, Instructional Material (4))
ACS Science for Kids activities explore phase changes of matter and their properties.
Vacuum Distillation of Gin and Food Items   
()
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.