Build an Atom Lab

which element has a whole number for atomic mass

carbon

which particles don't affect the stability of the atom

electrons

what is a rule for determining the mass number of an atom or ion

mass number=protons + neutrons

positive ions have ____ protons than electrons negative ions have _____ protons than electrons

more; less

which particles affect the charge of an atom or ion

protons and electrons

what particles determine mass number

protons and neutrons

which particles affect the stability of the atom

protons and neutrons

why is mass number always a whole number

rounded to an atomic mass unit

requirements for two atoms to be isotopes of each other

same number of protons as corresponding element; different masses; different number of neutrons