There is no change in temperature during a phase change as this energy is being used to make or break bonds between molecules. True

False

The correct answer is true

Because electrons have negligible mass, to account for the mass of the isotope, there must be 16 neutrons, 16 neutrally charged, massive, fundamental particles present in the sulfur nucleus. and thus finally, if we have the 32s2− ion, there are 18 electrons, 16 protons, and 16 neutrons.

1) according to the law of conservation of mass ,in all chemical reactions total mass is unchanged