What happens to the mass of a sample containing a radioactive element during its half-life?
A. The mass decreases by half. B. The amount of mass is doubled. C. Eventually there is no mass at all. D. The mass remains the same.
Of course, the mass remains the same for practical purposes. During the release of energy, a very tiny portion of mass is converted to energy, but that mass is extremely small, and cannot be determined by ordinary means.
