course materials

1. What is the difference between an atom and an element? Why is it
important to le
What is the difference between an atom and an element?Why is it important to learn the
history of scientific discoveries?How are the atomic mass and mass number different and
which of these values are found on the periodic table?How is the atomic mass calculated
and what is the one thing that makes isotopes different from each other?What are the 4
periodic trends discussed in this chapter and in what direction does each one increase? See
table 4.12