What do the celsius scale and kelvin scale have in common? a. both have the same temperature difference between degrees. b. both are related through a common temperature for boiling water. c. both use zero degrees as the freezing point of water. d. both were invented before the fahrenheit scale.

Both scales use the same 'size' degree.  Their zeroes are at different
temperatures, but both of them use a degree that's 0.01 the difference
between the freezing and boiling temperatures of water.  (Choice-A)

An  atom  (ours, not carroll's) consists of a positively charged  nucleus, surrounded by one or more negatively charged particles called  electrons. the positive charges equal the negative charges, so the atom has no overall charge; it is electrically neutral. most of an atom's mass is in its nucleus; the mass of an electron is only 1/1836 the mass of the lightest nucleus, that of hydrogen. although the nucleus is heavy, it is quite small compared with the overall size of an atom. the radius of a typical atom is around 0.1 to 0.25 nanometres (nm), whereas the radius of a nucleus is about 10-6  nm.  *  if an atom were enlarged to the size of the earth, its nucleus would be only 200 feet in diameter and could easily rest inside a small football stadium.read more on -