Across
- 4. denoted by the symbol R or R. It is the molar equivalent to the Boltzmann constant, expressed in units of energy per temperature increment per mole, i.e. the pressure–volume product, rather than energy per temperature increment per particle.
- 5. equilibrium vapor pressure is defined as the pressure exerted by a vapor in thermodynamic equilibrium with its condensed phases at a given temperature in a closed system.
- 8. the envelope of gases surrounding the earth or another planet.
- 15. an element or compound is a phase transition from the liquid phase to vapor.
- 18. the process of turning from liquid into vapor.
- 20. 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.
- 22. a law stating that the pressure of a given mass of an ideal gas is inversely proportional to its volume at a constant temperature.
- 23. continuous physical force exerted on or against an object by something in contact with it
- 27. the volume of one mole of a substance at a specified pressure and temperature.
- 28. a law stating that the volumes of gases undergoing a reaction at constant pressure and temperature are in a simple ratio to each other and to that of the product.
- 29. the spreading of something more widely.
Down
- 1. 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.
- 2. The process of changing from a solid to a gas without passing through an intermediate liquid phase.
- 3. a mixture of non-reacting gases, the total pressure exerted is equal to the sum of the partial pressures of the individual gases.
- 6. a law stating that equal volumes of gases at the same temperature and pressure contain equal numbers of molecules.
- 7. the temperature at which a given solid will melt.
- 9. combines the three gas laws: Boyle's Law, Charles' Law, and Gay-Lussac's Law.
- 10. 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.
- 11. the law that the product of the pressure and the volume of one gram molecule of an ideal gas is equal to the product of the absolute temperature of the gas and the universal gas constant.
- 12. an instrument measuring atmospheric pressure used especially in forecasting the weather and determining altitude
- 13. Gases are composed of a large number of particles that behave like hard, spherical objects in a state of constant, random motion.
- 14. the temperature and pressure at which the solid, liquid, and vapor phases of a pure substance can coexist in equilibrium.
- 16. the volume of a gas equals a constant value multiplied by its temperature as measured on the Kelvin scale
- 17. occurs when molecules settle out of a solution.
- 19. a high-level structured computer programming language used for teaching and general programming
- 21. the SI base unit of thermodynamic temperature
- 24. the temperature at which a liquid turns into a solid when cooled.
- 25. the temperature at which a liquid boils and turns to vapor.
- 26. water which collects as droplets on a cold surface when humid air is in contact with it.