how can law of conservation of mass. law be restated in terms of matter?
<answer> The law of conservation of mass states that for any system closed to all transfers of matter and energy, the mass of the system must remain constant over time. <context> The law of conservation of mass (sometimes referred to as the principle of mass conservation) is as follows: for any system closed to all transfers of matter and energy (both of which have mass), the mass of the system must remain constant over time, as system mass cannot change quantity if it is not added or removed.