The purpose of this packet is to compare two otherwise alike atoms when the number of protons, neutrons or electrons is different.
This packet includes several slide shows that will explain atomic numbers and mass numbers, and help you determine the number of protons, neutrons or electrons in a molecule.
This slideshow will review atomic number, mass number and ions. The second slide shows a table of contents if you wish to skip around
At the end of each slide, stop and try to work through the problem before reviewing the solution on the next slide.