15. classify each statement as an observation, a law, or a theory. when a metal is burned in a closed container, the sum of the masses of the container and its contents does not change. matter is made of atoms. matter is conserved in chemical reactions. when wood is burned in a closed container, its mass does not change.

This is what i found “nuclear fuel is material used in nuclear power stations to produce heat to power turbines. heat is created when nuclear fuel undergoes nuclear fission. most nuclear fuels contain heavy fissile actinide elements that are capable of undergoing and sustaining nuclear fission.” i hope this you for what your looking for. can you plz mark me brainliest?

Yes i think so not 100 percent sure though