Some definitions;

• Potion - A Potion is a magical mixture or compound that often involves both magical and mundane ingredients
• Mixture - It is when one substance or ingredient is distributed through another without any reaction taking place
• Compound - It occurs when there is a reaction that causes the two or more ingredients that are combined to undergo a chemical reaction and change the shape and form of their chemical bonds
• Sublimation - The changing of a substance from one state to another while skipping the intermidiate stage
• Solution - A solution is a mixture in which a smaller quantity known as the solute is dissolved and spread throughout a larger quantity or the solvent.

A Potion is a magical mixture or compound that often involves both magical and mundane ingredients. Individually, most of these ingredients have a specific purpose or effect, but when they are combined and experience that spark of catalytic magic, they often change their structure to serve a different function.

A mixture, as named above, is when one substance or ingredient is distributed through another without any reaction taking place. This means that there has been no rearrangement of chemical bonds i.e. there has been no “reaction” between any substances in the mixture.

A compound, on the other hand, occurs when there is a reaction that causes the two or more ingredients that are combined to undergo a chemical reaction and change the shape and form of their chemical bonds. In simplest terms, something has caused the building blocks of each substance to change. There are a variety of reasons this may occur, including extreme heat or a magical trigger. ((diff b/w mixture & compound = absence/presense of reaction))

THEORY OF PHASE TRANSITION: 

 solids, liquids, and gases are composed of particles known as atoms and molecules, which are groupings of two or more atoms. If these particles are packed closely together and moving slowly, that is what we observe as a solid. If they are packed less closely and experience slightly more dynamic (changing or active) movement, we see it as a liquid. Gases have the least densely packed particles of the three, and those particles express very active movement.

A phase transition is the process by which a solid becomes a liquid, a liquid becomes a gas, a gas becomes a solid, and so forth. We typically see this through a change in the amount of energy as created by heat.

• Solid to Liquid: Melting
• Solid to Gas: Sublimation
• Liquid to Solid: Freezing
• Liquid to Gas: Evaporation or Boiling
• Gas to Solid: Deposition
• Gas to Liquid: Condensation

the different components combining do not simply react on their own. If you threw the ingredients for the Cure for Boils - which you will brew in lab later this year - into an empty cauldron and just left it sitting there, it would be no closer to forming a Cure for Boils than when the ingredients were sitting separately. It requires the energy of heat as well as the Magic in your wand in order to initiate a reaction in the ingredients. The order you add the ingredients becomes important because it enables certain ingredients to react in a specific way with the compound as the Potion is brewed.