The conservation of mass states that in a closed system, the mass of substances remains constant over time, regardless of the processes acting inside the system. This principle is fundamental in chemistry and physics, ensuring that mass is neither created nor destroyed in chemical reactions and physical transformations.

Conservation Of Mass

conservation of mass

A closed system is a physical system that does not exchange matter with its surroundings but can exchange energy. It is often used in thermodynamics to simplify the analysis of energy transformations by focusing on energy exchanges only.

closed system

mass of substances

constant over time

processes acting inside the system

Fundamental Principle

Chemistry is the scientific discipline focused on the study of matter, its properties, composition, structure, and the changes it undergoes during chemical reactions. It bridges other natural sciences like physics, geology, and biology, providing a fundamental understanding of the material world and the interactions between different substances.

chemistry

Physics is the fundamental science that seeks to understand the nature and behavior of matter and energy in the universe, covering phenomena from the smallest subatomic particles to the largest cosmic structures. It provides the foundational principles that underpin other sciences and technologies, offering insights into the laws governing the physical world and enabling advancements in various fields.

physics

mass is neither created nor destroyed

Chemical reactions involve the transformation of substances through the breaking and forming of chemical bonds, resulting in the conversion of reactants into products. These reactions are governed by the principles of thermodynamics and kinetics, which dictate the feasibility and rate of these transformations.

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