( 2 ) Explain how exactly ( i . e . the procedure used ) you arrived at your answer ... in other words , walk me through your thinking . You will not receive credit if you don ' t show your work in detail .
12 . Describe , in detail , the " anatomy " of an atom . Include a discussion of all subatomic particles , any associated charges , their locations , how they interact with one another , and explain which of these particles actually identify the atom on the periodic table . Also include a discussion on which of these may change in number in the case of isotopes