Chemistry Laws

From the air we breathe to the food we eat, Chemistry gas laws are applied all around us. Almost everything can be fragmented down into chemical units, hence, chemistry is involved in everything that we do. It is essential for students to understand the Chemistry Laws to develop a strong base of the subject. Elements bond together to form chemical compounds. These chemical compounds formed can further bond with other elements to form numerous other substances. To understand Chemistry, in-depth, it is crucial to go through the various Chemistry laws and theories. 

List of Chemistry Laws

• Boyle’s Law: 

This law is also known as Mariotte’s law or Boyle-Mariotte law. According to Boyle’s law, the pressure as applied by the mass of an ideal gas is inversely proportional to the volume occupied by the gas. The law is valid only if the amount of gas and temperature remain unchanged within a closed system. Mathematically:

PV = k

• Law of Conservation of Mass:

It is one of the well-known and basic laws of Chemistry. The law states that the total amount of matter involved in the process of a chemical reaction remains the same before and after the reaction. 

• Charles Law:

Among the wide list of Chemistry laws, Charles Law is one of the experimental gas laws that define how gases expand upon heating. The law describes that when the pressure on any dry gas is kept constant, the volume and Kelvin temperature will be directly proportional to each other. Mathematically:

V = kT

• Dalton’s Law of Partial Pressure:

According to this law, the total pressure exerted by a mixture of gases is equal to the sum of partial pressures of the gases taken individually. 

• Periodic Law: 

Dmitri Mendeleev and Lothar Meyer developed the periodic law in 1869. The law states that the properties of the elements continue systematically when arranged according to increasing atomic numbers. The periodic law is one of the most important chemistry laws and theories. According to this law, when the elements are arranged according to their increasing atomic numbers, the same properties recur periodically, in the arrangement of elements. As a result, the elements fall into a group and lead to an arrangement that is referred to as the modern periodic table.

(Image to be added soon)

The above picture shows how different elements are arranged in the modern periodic table.

• Law of Conservation of Energy:

The law of conservation of energy is often referred to as the most fundamental Chemistry gas laws. The law concerns a thermodynamic system according to which the total energy of the system remains conserved or isolated from its surroundings. 

• Henry’s Law:

Henry’s Law is one of the crucial Chemistry laws and theories. It states that the amount of a gas liquified, for any volume and type of the liquid, is directly proportional to its partial pressure at a constant temperature. 

• Ideal Gas Law:

It is one of the vital laws discussed in Chemistry laws PDF, which relates the volume occupied by a number of gas moles at a temperature T, and a pressure P. Tthe relationship derived from this law is given below.

PV = nRT

• Laws of Thermodynamics:

Many students ask how many laws in Chemistry are vital from an examination point of view. Though there are several laws, the four laws of thermodynamics are crucial to understanding as they define the fundamental physical quantities. These quantities illustrate thermodynamic systems at thermal equilibrium. Zeroth Law, First Law, Second Law, and Third Law of Thermodynamics describe how these quantities behave under different circumstances.

• Zeroth Law of Thermodynamics:

It states that if one system is in equilibrium with another system, and the second system is in equilibrium with a third system; then the first system is also in equilibrium with the third system.

• First Law of Thermodynamics:

This law states that under any circumstances, energy cannot be destroyed or created. It can be converted from one form to another.

• Second Law of Thermodynamics:

This law states that the entropy of any isolated system will always increase with time, and these variations can never be negative.

• Third Law of Thermodynamics:

It states that a pure crystalline structure at absolute zero temperature will have no entropy. 

• Faraday’s Law:

Faraday’s Law states that the amount of emf generated in a coil, due to varying magnetic flux, is directly proportionate to the quantity of electricity passed through it. According to this law, any change in the magnetic flux linkage to a coil can induce an emf or voltage in the coil. The voltage will get generated irrespective of the matter of how change is produced.