The law of conservation of mass-energy, otherwise known as mass-energy equivalence states that E=mc², where E is energy, m is mass and c is the speed of light constant. In Einstein’s theory of relativity, he explained that mass and energy are the convertible and equivalent to one another.
The formula E=mc² explains that even a small amount of mass can produce a tremendous amount of concentrated energy. For example, a marble weighing 20 grams can produce a huge amount of energy equivalent to a 500 kiloton hydrogen bomb. However, this amount of energy would be difficult to release and can only be done through the process of matter-antimatter annihilation.
Thelawofconservationofmassstates that for any system closed to all transfers ofmatterandenergy, themassof the system must remain constant over time, as system'smasscannot change, so quantity cannot be added nor removed. Hence, the quantity ofmassis conserved over time.
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