Please answer every questions

2. What is the first law of thermodynamics and what does it mean? 3. Differentiate between endothermic and exothermic, and give an example of each. 4. How does potential energy differ from kinetic energy and give an example of each. 5. How does freezing a container of water affect the molecules according to KMT? 6. What makes a physical change different from a chemical change? 7. What is the difference between boiling water and evaporated water? What do they have in common? 8. Under normal conditions, how do the particles in a gas move when compared with those in a liquid