Which is true according to the kinetic theory? A. The particles that make up gases are densely packed. B. All particles of matter are in constant motion. C. All particles of matter move very quickly. D. The particles that make up solids do not move.
Kinetic theory explains macroscopic properties of gases, such as pressure, temperature, viscosity, thermal conductivity, and volume, by considering their molecular composition and motion. Answer B. All particles of matter are in constant motion.
