The most stable phase of a substance at any given temperature is the phase with the lowest

free energy

Under different conditions of temperature and pressure, the physical states of a substance changes and these variations can be graphically illustrated through phase diagram. As we cross the lines or curves on the phase diagram, a phase change occurs.  At low temperature, enthalpy dominates and solids has the lowest enthalpy. When temperature is high, entropy dominates and gases has the highest entropy.

Free energy is characterized by both enthalpy and entropy. The balance between enthalpy and entropy is controlled by the temperature and spontaneous changes always lead to a lower overall free energy.

a  solution  is always transparent, light passes through with no scattering from solute particles which are molecule in size. the  solution  is homogeneous and does not settle out. a colloid is intermediate between asolution  and a  suspension. while asuspension  will separate out a colloid will not.

the food using pesticides in the future will harm you by giving you diseases like cancer or something since they have things that we should not eat in it like chemicals or pesticides. that is why organic food is more expensive because they take the time to make it right and healthy for you to eat.

explanation: