Gases

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  1. 3. symbol Vm
  2. 5. the process of turning from liquid into vapor.
  3. 9. an instrument measuring atmospheric pressure, used especially in forecasting the weather and determining altitude.
  4. 10. A theory of the thermodynamic behavior of matter, especially the relationships among pressure, volume, and temperature in gases, based on the dependence of temperature on the kinetic energy of the rapidly moving particles of a substance.
  5. 12. an ideal gas law where at constant volume, the pressure of an ideal gas is directly proportional to its absolute temperature
  6. 14. approximately 0.000145 pounds per square inch, or 9.9 × 10-6 atmospheres
  7. 16. water that collects as droplets on a cold surface when humid air is in contact with it.
  8. 17. the degree or intensity of heat present in a substance or object, especially as expressed according to a comparative scale and shown by a thermometer or perceived by touch.
  9. 18. states that in a mixture of non-reacting gases, the total pressure exerted is equal to the sum of the partial pressures of the individual gases.
  10. 22. point the temperature at which solid and liquid phases coexist in equilibrium.
  11. 23. the continuous physical force exerted on or against an object by something in contact with it.
  12. 24. the SI base unit of thermodynamic temperature, equal in magnitude to the degree Celsius.
  13. 26. It states the ratio of the product of pressure and volume and the absolute temperature of a gas is equal to a constant. PV/T = k.
  14. 28. the envelope of gases surrounding the earth or another planet
  15. 29. A law stating that the volume of an ideal gas at constant pressure is directly proportional to the absolute temperature.
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  1. 1. diagram a diagram representing the limits of stability of the various phases in a chemical system at equilibrium, with respect to variables such as composition and temperature.
  2. 2. the pressure of a vapor in contact with its liquid or solid form.
  3. 4. The direct solidification of a vapor by cooling; the reverse of sublimation.
  4. 6. a physical constant which is featured in many fundamental equations in the physical sciences
  5. 7. states that in a mixture of non-reactinggases the total pressure exerted is equal to the sum of the partial pressures of the individual gases.
  6. 8. point a point on a phase diagram at which both the liquid and gas phases of a substance have the same density, and are therefore indistinguishable.
  7. 11. the temperature at which a liquid boils and turns to vapor.
  8. 13. the intermingling of substances by the natural movement of their particles.
  9. 15. of an element or compound is a phase transition from the liquid phase to vapor.
  10. 19. point the temperature and pressure at which the solid, liquid, and vapor phases of a pure substance can coexist in equilibrium.
  11. 20. When the surface layer of snow or ice turns into fog or steam without melting
  12. 21. a law in chemistry: equal volumes of all gases at the same temperature and pressure contain equal numbers of molecules
  13. 25. where P (pressure) × V (volume) = n (number of moles) × R (the gas constant) × T (temperature in Kelvin).
  14. 27. a gas law, stating that the pressure and volume of a gas have an inverse relationship, when temperature is held constant.