According to the law of conservation of matter, the total amount of mass or matter in a closed system remains constant over time. This means that matter cannot be created or destroyed, it can only be converted from one form to another. Therefore, the total number of atoms of each element remains the same in a chemical reaction or physical process. So, the principle that is always true according to the law of conservation of matter is that matter is neither created nor destroyed, it is only transformed.
According to the Law of Conservation of Matter, the total mass of substances before a chemical reaction always equals the total mass of substances after the reaction. In other words, matter can neither be created nor destroyed during a chemical reaction; it can only be rearranged or transformed. Therefore, the statement that is always true according to the Law of Conservation of Matter is that the total mass of substances involved in a closed system remains constant.
According to the law of conservation of matter, the total amount of matter in a closed system remains constant over time. This means that matter cannot be created or destroyed; it can only be rearranged or transformed into different forms. Therefore, the statement that is always true according to this law is: "The total amount of matter in a closed system is conserved."
