) If this substance is at the pressure and temperature of point E and the temperature is raised so that the pressure and temperature are equal to that of point F, what phase transition will occur?

The First-order phase transitions will occur.

Explanation:

The First-order phase transitions are those that involve a latent heat. During such a transition, a system either absorbs or releases a fixed (and typically large) amount of energy per volume while Second order phase transitions occur when a new state of reduced symmetry develops continuously from the disordered (high temperature) phase. The ordered phase has a lower symmetry than the Hamiltonian—the phenomenon of spontaneously broken symmetry.

There are six changes of phase that substances go through:

   Freezing: liquid to solid.    Melting: solid to liquid.    Condensation: gas to liquid.    Vaporization: liquid to gas.    Sublimation: solid to gas.    Deposition: gas to solid.

Evaporation: this is when warmth from the sun causes water from oceans, lakes, streams, ice and soils to rise into the air and turn into water vapour (gas). water vapour droplets join together to make clouds! condensation: this is when water vapour in the air cools down and turns back into liquid water.

The answer should be c.