Edit the formula in cell O6 so that it uses relative references instead of absolute references for the range B6:M6, and then copy the formula from cell O6 to fill the range O7:O10 without formatting.

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.

Use a magnet to separate iron, evaporate water, i'm not sure how to separate the other two i'm sorry but good luck

What are the options? physical property can be color, smell, opacity, viscosity, density, infra red spectrum, melting and boiling points, attraction and repulson to magnets, etc.

Ireally don’t know bruh