Students look more deeply into the structure of the atom and play a game to better understand the relationship between protons, neutrons, electrons, and energy levels in atoms and their location in ...

Calcium becomes a +2 ion and each chlorine becomes a -1 ion. The +2 calcium ion and the two -1 chloride ions attract each other and form an ionic bond and the compound calcium chloride. One calcium ...

Electronegativity, an essential characteristic of all elements in the periodic table, measures an atom's ability to attract electrons ... We were amazed to discover that his scale did not match either ...