Thermal physics

3. Change of a substance from a gas to a liquid.
5. The study of heat energy and its transformations.
8. Italian scientist known for his contributions to the scientific method and physics.
9. Heat transfer through electromagnetic waves.
12. Force per unit area.
15. Amount of heat required to raise the temperature of a unit mass by one degree Celsius.
18. Instrument used to measure temperature.

1. Heat transfer through the movement of fluids.
2. PV=constant at constant temperature is known as ______.
4. A measure of disorder or randomness in a system.
6. When two objects are at the same temperature, they are in ______.
7. Heat absorbed or released during a change of phase at constant temperature.
10. The lowest possible temperature, at which a substance has minimal internal energy.
11. A state of matter with charged particles but no overall charge.
13. Change of a substance from a liquid to a gas at temperatures below its boiling point.
14. The energy of motion.
16. Heat transfer through direct contact of particles.
17. A group of atoms bonded together.