Question

how should the model be changed to show the particles of a liquid at a lower temperature? a separate the particles into positive and negative charges, and increase the space between the particles. b separate the particles into positive and negative charges, but maintain the same space between the particles. c decrease the velocities of the particles, and maintain the space between the particles. d increase the velocities of the particles, but increase the same space between the particles.

Explanation:

When the temperature of a liquid decreases, the kinetic energy of its particles decreases. This results in a decrease in the velocities of the particles. The charge - related options (A and B) are not relevant to the change due to temperature. Increasing the velocities (D) is incorrect as lower temperature means lower kinetic energy and lower velocities. Decreasing the velocities while maintaining the space between particles is correct as the volume of a liquid doesn't change drastically with a small temperature drop.

Answer:

C. Decrease the velocities of the particles, and maintain the space between the particles