a measure of the force exerted by a gas above a liquid in a sealed container

1. a measure of the force exerted by a gas above a liquid in a sealed container

2. Vaporization that occurs at the surface of a liquid (NOT boiling)

3. A solid in which the molecules are arranged in a orderly, repeating pattern called a crystal lattice

4. the phase change in which a solid changes into a liquid

5. the temperature at which a liquid boils at standard pressure

6. A phase change in which a solid changes directly into a gas

7. A phase change in which a gas changes into a liquid

8. the temperature at which the vapor pressure of a liquid is equal to the external pressure

9. a device used to measure vapor pressure

10. All conditions of Standard Pressure

11. A solid that lacks an ordered structure

12. Point at which a solid melts at standard pressure

13. The point that represents a set of conditions at which all 3 phases can exist at the same time

14. The energy it takes to change 1 gram of a substance by 1°

15. According to the chart below, which substance would become the hottest if both substances absorb 500J of heat?

16. Energy needed to melt one gram of a substance at its melting point

17. The process of breaking bonds in a chemical reaction, ________ energy

18. ΔH = ____ - ____

19. Energy needed to boil one gram of a substance at its boiling point

20. An exothermic process ________ heat; ΔH = _____

21. An endothermic process ________ heat; ΔH = _____

22. A +ΔS indicates a(n) ________ in disorder

23. The point at very high temperature and pressure where it is impossible to distinguish between liquid and gas

24. Potential energy is used to ______________ at a substance’s melting point and boiling point

25. Kinetic energy is used to ______________ as a substance is heated

26. A -ΔS indicates a(n) ________ in disorder