Across
- 1. This temperature scale is based on absolute zero.
- 5. The molecules of a substance move faster when they --- energy.
- 9. A --- curve is a graph showing the temperatures and phase changes for the endothermic phase changes.
- 10. In thermal ---, two objects in contact exchange energy until they reach the same temperature.
- 11. This temperature scale is based on the freezing point and boiling point of water.
- 13. One of the advantages of using the Kelvin temperature scale is that is has no --- numbers.
- 14. The heat of --- is the amount of energy needed to melt 1 kg of a substance.
- 16. A substance that allows the rapid transfer of energy, as heat or electrical current, through a substance.
- 18. The average kinetic energy of the molecules of a substance.
- 20. Absolute zero is the --- possible temperature at which all motion ceases.
- 21. A substance that does not allow the rapid transfer of energy, as heat or electrical current, through a substance.
- 24. The flow of energy from high temperature to low temperature.
- 25. In condensation, energy is ---.
- 28. The phase change from liquid to gas.
- 29. The heat of --- is the amount of energy needed to transform 1 kg of a liquid to a gas.
- 30. The transfer of energy through movements of mass (currents) in a fluid.
- 31. In a phase change, the temperature is --- .
Down
- 2. Any process that absorbs energy from the surrounding environment.
- 3. “Dry Ice” does not melt; instead, it goes through a phase change called --- and has no liquid phase.
- 4. A --- curve is a graph showing the temperatures and phase changes for the exothermic phase changes.
- 6. The phase change to solid directly from gas without a liquid phase.
- 7. The phase change from liquid to solid.
- 8. The phase change from solid to liquid.
- 12. Both endothermic and exothermic processes exchange energy with the surrounding ---.
- 14. This temperature scale is only used in the United States.
- 15. In melting, energy is --- .
- 17. The molecules of a substance slow down when they --- energy.
- 19. The phase change from gas to liquid.
- 22. The --- heat of a substance is the amount of energy needed to raise the temp of 1 kg by 1 C.
- 23. The transfer of energy by electromagnetic waves without requiring contact with the source of the energy.
- 26. Any process that releases energy into the surrounding environment.
- 27. The transfer of energy through the collisions of molecules in a solid.