General Science Periodic Table of the Elements Flash Card Set 11156

Card 1 of 10
Atomic Mass

The atomic mass of an element listed in the Periodic Table represents the average mass of a single atom of that element and is measured in atomic mass units (amu). This number is an average as some elements have isotopes with atoms that vary in their number of neturons and, therefore, differ in weight.

atomic mass units (amu)

The atomic mass of an element listed in the Periodic Table of the Elements is measured in _________.