Thermodynamics Vocabulary

1. This temperature scale is based on absolute zero.
5. The transfer of energy by electromagnetic waves without requiring contact with the source of the energy.
7. In condensation, energy is ---.
9. The phase change from gas to liquid.
12. In melting, energy is --- .
13. A --- curve is a graph showing the temperatures and phase changes for the exothermic phase changes.
14. The molecules of a substance slow down when they --- energy.
16. The --- heat of a substance is the amount of energy needed to raise the temp of 1 kg by 1 C.
19. Any process that absorbs energy from the surrounding environment.
21. The heat of --- is the amount of energy needed to transform 1 kg of a liquid to a gas.
23. The phase change from liquid to solid.
24. The transfer of energy through the collisions of molecules in a solid.
25. “Dry Ice” does not melt; instead, it goes through a phase change called --- and has no liquid phase.
26. This temperature scale is only used in the United States.
27. The transfer of energy through movements of mass (currents) in a fluid.
29. In a phase change, the temperature is --- .
30. The phase change from liquid to gas.
31. The phase change from solid to liquid.

2. In thermal ---, two objects in contact exchange energy until they reach the same temperature.
3. The flow of energy from high temperature to low temperature.
4. A --- curve is a graph showing the temperatures and phase changes for the endothermic phase changes.
6. Both endothermic and exothermic processes exchange energy with the surrounding ---.
8. Any process that releases energy into the surrounding environment.
10. Absolute zero is the --- possible temperature at which all motion ceases.
11. The molecules of a substance move faster when they --- energy.
15. The phase change to solid directly from gas without a liquid phase.
17. The heat of --- is the amount of energy needed to melt 1 kg of a substance.
18. This temperature scale is based on the freezing point and boiling point of water.
20. A substance that allows the rapid transfer of energy, as heat or electrical current, through a substance.
22. The average kinetic energy of the molecules of a substance.
24. A substance that does not allow the rapid transfer of energy, as heat or electrical current, through a substance.
28. One of the advantages of using the Kelvin temperature scale is that is has no --- numbers.