Assertion: atom's proton | /r/HasAspect | the same
Facets:
value: approximately
type: DEGREE
value: in theory
type: OTHER
Source sentences:
text: Protons and neutrons, which together form the nucleus around which electrons spin, have approximately the same mass—a mass that is many times greater than that of an electron.
text: Protons and neutrons have approximately the same mass, about 1.67 × 10-24 grams, which scientists define as one atomic mass unit (amu) or one Dalton.
text: In theory, a particle and its anti-particle (for example, proton and antiproton) have the same mass, but opposite electric charge and other differences in quantum numbers.
text: Protons and neutrons have approximately the same mass.