Matter can undergo chemical reactions and nuclear reactions. Which statement is true only for nuclear reactions?
A. The mass of the reactants is conserved.
B. The atoms are reorganized into products,
C. The nuclei of the atoms are reorganized.
D. The energy in the reactants is conserved.

Enzyme make a hormone as a catalyst

You would be correct, boiling water does disinfect contamination.    the property of disinfecting means to kill  germs, bacteria and other pathogens or contamination  that might cause an infection or cause a person to become sickly. a couple methods of disinfecting are using soap, other cleaning supplies or by simply "boiling" the contaminate.  the reason why boiling water disinfects certain attributes is because some cells cannot survive the heat and pressure.

Nonmetal are moldable and easily shaped