Thermal physics

1. A temperature scale based on absolute zero and increments of the Celsius degree.
4. The change in heat content in a chemical reaction at constant pressure.
6. A transformation from one state of matter to another, such as solid to liquid.
9. The property of a material to conduct heat.
10. Energy possessed by a body due to the motion of particles within it.
12. The movement of thermal energy from a hotter object to a cooler one.
15. A gas that perfectly follows the ideal gas law under all conditions.
18. A gas law stating that equal volumes of gases contain equal numbers of particles under identical conditions.
19. The lowest possible temperature where particles have minimal thermal motion.
20. The heat required to raise the temperature of a unit mass of a substance by one degree.
25. A process occurring at constant temperature.
27. The increase in volume of a material as its temperature rises.
28. A gas that does not behave according to the ideal gas laws at high pressure or low temperature.
29. A gas law stating that at constant temperature, the pressure and volume of a gas are inversely proportional.
30. The temperature at which a liquid turns into a solid.

2. The temperature above which a gas cannot be liquefied, regardless of pressure.
3. A process occurring without heat transfer between a system and its surroundings.
5. A gas law stating that at constant pressure, the volume of a gas is directly proportional to its temperature.
7. Variables that define the state of a system, such as pressure, volume, and temperature.
8. The temperature at which a liquid's vapor pressure equals the surrounding pressure.
11. The temperature at which a solid becomes a liquid.
13. An early theory that heat is a material substance called caloric.
14. The point at which a liquid cannot absorb more of a given solute.
16. The heat absorbed or released during a phase change without a change in temperature.
17. The pressure exerted by a vapor in equilibrium with its liquid or solid phase.
21. The rate at which a liquid transitions into a vapor.
22. The amount of heat required to change a substance's temperature by a specific amount.
23. The volume occupied by one mole of gas at standard temperature and pressure.
24. The state at which two objects in contact do not exchange heat.
26. The laws governing the behavior of gases in response to pressure, volume, and temperature.