Which type of property can be observed only by changing a substance into a different substance?
a.
intensive property
b.
extensive property
c.
physical property
d.
chemical property

Your answer is Chemical Property! Hope I helped!

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.

It could possibly be beneficial if the experiment is successful.