When heating a substance, a phase change will occur when the kinetic energy of the particles is ______________________ the attractive forces between the particles.
equal to
high enough to increase
high enough to overcome
low enough to overcome
low enough to combine

Question

When heating a substance, a phase change will occur when the kinetic energy of the particles is ______________________ the attractive forces between the particles.
	equal to
	high enough to increase
	high enough to overcome
	low enough to overcome
	low enough to combine

anonymous · Answer

B.
The higher the attractive forces, the more probability the substance will not change state. We can say that attractive forces=potential energy.
Conversely, when a substance is heated, KE varies as inversely as the PE. Hence, when a substance is heated, the KE increases, in such way that will allow the particles try to move, disintegrate from the attractive forces and be ready to acquire a new structure of a substance, and in this case to convert from one state to another.