In which case would the kinetic energy of particles be increasing? (1 point)
Responses
Metal is at room temperature, 37°C.
Metal is at room temperature, 37°C.
Metal is melted at 1,300°C.
Metal is melted at 1,300°C.
Metal is cooled at 1,300°C.
Metal is cooled at 1,300°C.
Metal is heated from room temperature to 200°C.
I would go with b and d.
b. When a solid is melted, the solid particles move around faster due to increasing kinetic energy making it easier to break the intermolecular forces holding the solid together which allows the liquid to form.
d. Increasing the T from room T to 200 C obviously increases the KE of the particles due to T difference.
The kinetic energy of particles increases when the temperature of a substance increases. The kinetic energy of particles is directly related to their thermal energy, which is a measure of the random motion of particles. When a substance is heated, its particles gain energy and move faster, resulting in an increase in kinetic energy.
Looking at the given options, the case where the kinetic energy of particles would be increasing is when the metal is heated from room temperature to 200°C. During this process, the temperature of the metal is increasing, which means the kinetic energy of its particles is also increasing.