Question

which statement best explains why mass is not conserved in a nuclear change? (1 point) some of the reactants are not used. some of the atoms are lost in the reaction. some of the products have less mass than the reactants. some of the matter is converted to energy.

Explanation:

In nuclear changes, according to Einstein's mass - energy equivalence ($E = mc^{2}$), some of the mass of the matter is converted into energy, which is why mass is not conserved in the traditional sense.

Answer:

Some of the matter is converted to energy.