Essential Principles of Chemistry and Thermodynamics

Methods of Separating Solutions

• Crystallization: A process used to separate a solid solute from the solvent in which it is dissolved.
• Solvent Extraction: Separating a component from a mixture using a solvent, based on the varying solubility of the components.
• Simple Distillation: Used to separate a solution composed of two liquids based on their different boiling points.

Crude Oil and Refining

Oil is a blackish, oily fossil fuel that permeates porous rocks. Its formation is favored in shallow, nutrient-rich seas with significant sediment input and minimal bottom-water movement.

Crude oil is a complex mixture of various hydrocarbons. After extraction, it is transported via pipelines to refineries, where it undergoes transformation into finished products through fractional distillation, separating compounds by molecular size.

Atmospheric Pressure

Atmospheric pressure is the force exerted by the atmosphere due to its weight on surfaces in contact with it. It is exerted equally in all directions and acts perpendicular to the surface of objects.

Gas Laws

Boyle's Law

At a constant temperature, the volume occupied by a given mass of gas is inversely proportional to its pressure.

First Law of Gay-Lussac

If the pressure of a gas remains constant, the volume of a fixed mass of gas is directly proportional to its absolute temperature.

Second Law of Gay-Lussac

If the volume of a gas remains constant, the pressure of a fixed mass of gas is directly proportional to its absolute temperature.

The Kinetic Theory of Matter

Matter is composed of microscopic particles that are in constant, random motion.

• Melting Point: The temperature at which a substance changes between solid and liquid states.
• Boiling Point: The temperature at which a substance changes between liquid and gaseous states.