HELP ASAP DUE LAST WEEK ILL GIVE BRAINLIEST AND THE ONES THAT AREN'T ANSWERED YET

Easy definition for atom and atomic mass

The characteristic of two different types of reactions are shown below. reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.

Which of the following units is not an official si unit? mole liter kilogram ampere