There are numerous laws of chemistry that form as the basis or the grounds of chemistry. These laws can be categorized and sub-categorized into many lists however, for the ease of the user we can define or categorize the laws of chemistry into major and minor laws. Here is look at some of the major laws of chemistry:
*The law of conservation of mass: This is one of the most fundamental laws in all of chemistry. This law states that during a chemical reaction or a chemical change as well as a physical change, matter is neither made nor is it destroyed. With this said, we can also add by stating that during these changes, the mass of the final substance always stays the same whereas its properties change.
* The law of definite proportions: No matter what source or sample of a compound we may use, it will always, according to the law of definite proportions have the same elements that will also be found in the same exact ratios of mass.
* The law of multiple proportions: This is another major law of chemistry that aids in many chemical processes. This law states that if we have two entirely different compounds that are produced from two of the very same elements, then when we consider their mass in the form of ratios when the sample of these two compounds are combined, they will form a unique ratio that will always be equivalent to small whole numbers.
* The law of conservation of energy: This is again a very important law of chemistry and is also similar to the conservation of mass. In this law, it is stated that the energy that is found in this entire universe is always and will always remain constant. It also goes on to say that energy, like mass can neither be destroyed nor can it be created.
*Avogadro’s law: This law is a major gas law which states that two ideal gasses that contain the same volume at the same pressure and temperature will have the same number of molecules as well as atoms, ions, and electrons. The Avogadro’s law is also called the ideal gas law in which the pressure multiplied by the volume is equivalent to the multiplication of the number of molecules that are found in the gas with that of the temperature as well as the gas constant.
There are many other laws of chemistry that are considered to be the major laws. The above mentioned laws are some of the most important and fundamental laws of chemistry.
Source:
http://chemistry.about.com/od/generalchemistry/a/chemistrylaws.htm