Lavoisier's Law of Conservation of Mass

With the development of more accurate ideas on elements, compounds, and mixtures, scientists began to study how and how substances respond. French chemist A. Lavoisier laid the foundation for material scientific research according to specific laws to explain the reaction of matter. These laws are known as combination rules of chemical substances. These ultimately form the basis of Dalton's material atomism.

According to this rule, during physical or chemical change, the total mass of the product remains equal to the total mass of the reactants.

If we heat 4 g \ (\ ce {CO 2} \) and 6 g \ (\ ce {CaO} \) 10 g \ (\ ce {CaCO 3 \ \), these observations and Mass conservation law is indicated.

Since the mass of the reactant is equal to the mass of the product, observation is consistent with the conservation of mass conservation.

Antoine Lavoisier discovered the law of massive protection, which caused many new discoveries in the 19th century. Joseph Prussian's law and John Dalton's atomic theory were born from Antoine Lavoisier's discovery. Quantitative experiments with Lavoisier show that combustion involves oxygen, not the previously considered concept of furodiston. An important idea in an ancient Greek philosophy is "there is nothing to get from anything". Therefore, existing ones exist. Clear words were found in Empedocles (around the 4th century BC), and there is no further principle that something can disappear. something"

Until the end of the eighteenth century, science provided concrete evidence of the existence of atoms. In 1789, Antoine Lavoisier developed a mass conservation law. This states that the quality of the reaction product is the same as the mass of the reactant. Ten years later, Joseph Luis Proust proposed a proportional law where the masses of elements in a compound always appear at the same rate. Although these theories do not refer to atoms, John Dalton has developed a multi-ratio method based on them, which indicates that the proportion of the element mass in the compound is a small integer. Dalton's multi-law rule comes from experimental data. He suggested that each chemical element consists of a single atom which can not be destroyed by any chemical method. His oral presentation (1803) and publication (1805) showed the beginning of scientific atomism.