Across
- 2. _______ tension; a measure of the inward pull by particles in the interior
- 5. _______ point; temperature at which a liquid is converted into a crystalline solid
- 7. an instrument used to measure atmospheric pressure
- 8. _______ diagram; a graph of pressure versus temperature that shows in which phase a substance exists under different conditions of temperature and pressure.
- 13. _______ force; weak forces that result from temporary shifts in the density of electrons in electron clouds. Sometimes called London forces after the German-American physicist who first described them.
- 16. Graham's law of __________; states that the rate of effusion for a gas is inversely proportional to the square root of its molar mass
- 17. _______ solid; particles are not arranged in a regular, repeating pattern.
- 18. a measure of the average kinetic energy of the particles in a sample of matter
- 19. _______ point; the temperature at which the vapor pressure of a liquid equals the external or atmospheric pressure
- 21. process by which a liquid changes to a gas or vapor
- 22. process by which a substance changes from a gas or vapor to a solid without first becoming a liquid
- 23. kinetic _________ theory; describes the behavior of matter in terms of particles in motion
- 25. Dalton's law of __________ pressures; total pressure of a mixture of gases is equal to the sum of the pressures of all the gases in the mixture
- 26. _______ bond; a dipole-dipole attraction that occurs between molecules containing a hydrogen atom bonded to a small, highly electronegative atom with at least one lone electron pair.
- 28. _______ pressure; pressure exerted by a vapor over a liquid
Down
- 1. _______ point; temperature at which the forces holding its crystal lattice together are broken and it becomes a liquid
- 3. force per unit area
- 4. SI unit of pressure... equal to a force of one newton per square meter.
- 6. the average air pressure at sea level
- 9. An element that exists in different forms at the same state-solid, liquid, or gas
- 10. the process of vaporization occurring only at the surface of a liquid.
- 11. compounds that lower the surface tension of water
- 12. a measure of the resistance of a liquid to flow
- 13. term used to describe the movement of one material through another
- 14. process by which a gas or a vapor becomes a liquid
- 15. _________ collision; one in which no kinetic energy is lost
- 18. _______ point; the point on a phase diagram that represents the temperature and pressure at which three phases of a substance can coexist.
- 20. _______ solid; a solid whose atoms, ions, or molecules are arranged in an orderly, geometric structure.
- 24. _______ cell; the smallest arrangement of atoms in a crystal lattice. It has the same symmetry as the whole crystal
- 27. _______ - _______ force; attractions between oppositely charged regions of polar molecules