Question

When the molecules in a body move with increased speed, it's possible that the body will change from a
A. gas to a solid.
B. liquid to a gas.
C. liquid to a solid.
D. gas to a liquid.
i think is c

Answer 1

the keyword here is "increased" speed. If you increase the motion of a molecule, do you think it's more likely to heat up or cool down?

Answer 2

D.liquid to gas
when the molecules move with increased speed, their average kinetic energy increases, causing the intermolucular forces to weaken and so they move further away from each other and eventually change phase. this is exactly what happens when you heat something, the molecules, gain energy, vibrate about theuir mean positions, at thresh-hold amplitudes or velocities, they break the molecular forces and chenge phase from solid to liquid or liquid to gas

Answer 3

B.