1. In a gas kept at a constant temperature, all molecules move with the same speed.
A. True
B. False
2. A hot object has more thermal energy than a similar cold object only because of greater kinetic energy.
A. True
B. False
3. The thermal energy of the particles in a gas is related to the temperature of the gas.
A. True
B. False
1- false 2- true 3-true ???
2 is also false. If you raise the temperature, then the molecules will, on average, also have a larger potential energy.
That is true, it is not only kinetic energy
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1. In a gas kept at a constant temperature, all molecules move with the same speed.
Answer: B. False
Explanation: In a gas at a constant temperature, known as an ideal gas, the molecules have a wide range of speeds. The distribution of molecular speeds in a gas is described by the Maxwell-Boltzmann distribution, which shows that molecules have a range of speeds. Some have high speeds, some have medium speeds, and some have low speeds. Therefore, it is not accurate to say that all molecules in a gas move with the same speed at a constant temperature.
2. A hot object has more thermal energy than a similar cold object only because of greater kinetic energy.
Answer: B. False
Explanation: Thermal energy is the total energy of all the particles in a substance due to their random motion and vibrations. While kinetic energy is a component of thermal energy, thermal energy also includes potential energy and internal energy of the particles. Therefore, a hot object has more thermal energy than a similar cold object because it has both greater kinetic energy and other forms of energy.
3. The thermal energy of the particles in a gas is related to the temperature of the gas.
Answer: A. True
Explanation: The thermal energy of particles in a gas is directly related to the temperature. As the temperature of a gas increases, the average kinetic energy of the particles also increases. This, in turn, leads to higher thermal energy. The relationship between thermal energy and temperature is described by the equation: Thermal Energy = number of particles * Boltzmann constant * temperature. Therefore, it is true to say that the thermal energy of gas particles is related to the temperature of the gas.