Which describes isotopes? check all that apply 1.isotopes have the same atomic mass 2.isotopes have the same atomic number 3.isotopes are always stable 4.isotopes are always radioactive 5.isotopes are stable or radioactive 6.isotopes have different mass numbers

answers: 2,5,6 on ed-

i think it's c. i'm not sure but i think so.

qualitative observation deals with data that can be observed with our senses: sight, smell, touch, taste, and hearing. they do not involve measurements or numbers. for instance, colors, shapes, and textures of objects are all qualitative observations.