1. describe the 3 rules that govern the building of an electron configuration. provide an example that
demonstrates how the 3 rules govern the arrangement of electrons.

Use the periodic table to determine the electron configuration of dysprosium (dy) and americium (am) in noble-gas notation.

State one important difference between a physical change and a chemical change?

Match the term to its description match term definition chemical energy a) internal energy caused by vibrations of atoms and molecules electrical energy b) electromagnetic energy that travels in waves radiant energy c) the movement of an electrical charge thermal energy d) potential energy stored in the bonds between atoms