Which statement is not part of dalton's atomic theory?
a) each element is composed of indestructible particles called atoms.
b) atoms are themselves composed of protons, neutrons, and electrons.
c) all atoms of a given element have the same mass and other properties.
d) atoms combine in simple whole-number ratios to form compounds.

And a) oxygen i believe

13) a 14) a15) b16) i don't know sorry17) a (maybe)

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.