Determine which change of state is being described in this passage.
As the temperature decreases, the atoms lose energy. The atoms begin to move slower. They are held together by
attractive forces, but are still able to slide past each other.
solid to liquid
liquid to solid
gas to liquid
gas to solid

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.