2. Which statement best describe gases? a. Gases consist of molecules that have enough spatial separation that the intermolecular bonding characteristics of liquids and solid is absent. b. Gases are almost incompressible. In liquids molecules are close to each other. c. Gases are characterized by structural rigidity and resistance to a force applied to the surface. d. Gases are in the state in which matter adapts to the shape of its container but varies only slightly in volume
Kinetic Theory of Gas
The Kinetic Theory of gases is a classical model of gases, according to which gases are composed of molecules/particles that are in random motion. While undergoing this random motion, kinetic energy in molecules can assume random velocity across all directions. It also says that the constituent particles/molecules undergo elastic collision, which means that the total kinetic energy remains constant before and after the collision. The average kinetic energy of the particles also determines the pressure of the gas.
P-V Diagram
A P-V diagram is a very important tool of the branch of physics known as thermodynamics, which is used to analyze the working and hence the efficiency of thermodynamic engines. As the name suggests, it is used to measure the changes in pressure (P) and volume (V) corresponding to the thermodynamic system under study. The P-V diagram is used as an indicator diagram to control the given thermodynamic system.
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