Let's evaluate each statement:
A. Fewer particles means there is more kinetic energy.
This statement is false. The number of particles is not directly related to the amount of kinetic energy. Kinetic energy is more closely associated with the temperature and the speed of the particles rather than their quantity.
B. As temperature increases so does kinetic energy.
This statement is true. Kinetic energy is directly related to temperature; as the temperature of a substance increases, the average kinetic energy of its particles also increases.
C. As temperature decreases particles move closer together.
This statement is generally true, especially in gases and liquids. As temperature decreases, particles tend to lose kinetic energy, resulting in a decrease in thermal motion, which causes them to come closer together (solidification in the case of liquids, condensation for gases).
D. As the number of particles increases so does kinetic energy.
This statement is misleading. While having more particles in a system may contribute to the total energy of the system, it does not mean that the kinetic energy of each individual particle increases. Kinetic energy per particle is more a function of temperature than the number of particles.
Summary:
- A: False
- B: True
- C: True
- D: Misleading/False
1 answer