Comparative Studies of Laws of Conservation of Mass, Energy, and Elecctric Charge, and Multiform Laws of Conservation of Energy and the like — No.2 of Comparative Chemistry Series Papers

As No.2 of comparative chemistry series papers, this paper discusses the same and different points of law of conservation of mass, law of conservation of energy, and law of conservation of elecctric charge. The same points: they belong to the three fundamental conservation laws in modern chemistry; and they are all widely used in chemistry. The different points: the law of conservation of energy and the law of conservation of elecctric charge are also correct in physics, while the law of conservation of mass is not correct in physics, because mass and energy can be converted mutually; and in the fields of natural sciences, the law of conservation of energy is the most important and the most widely used law, while the other two laws are not so important and far-reaching. By using the comparative method, and referring to the concept of Comparative Sciences Clusters, these three laws of conservation can be dealed with the unified method, and the concept of Multiform Laws of Conservation of Energy may be proposed, namely these three laws of conservation can be unified as sets of multiform laws of conservation of energy taking energy as the core. Finally, comparing with and referring to “partial and temporary unified theory of natural science” and “partial and temporary unified variational principle of natural science”, these three laws of conservation are dealed with the unified method of variational principle.