[CHM 131] - Final Exam Guide - Everything you need to know! (81 pages long)

• School: University of Rochester
• Department: Chemistry
• Course: CHM 131
• Professor: Hafensteiner

Document Summary

Structure: o protons positive charge o neutrons neutral charge o. Element: contains only one type of atom o atomic number: # of protons, determines what type of element o mass number: # of protons + # of neutrons. Interaction of non-polar substance in the presence of polar 1 2. Ionic and polar molecules are caused by en. Trend: more protons, more en; further the electron being shared, the less en. Scientific method: the use of experimentation to prove something by eliminating other options. Test the hypothesis through a clean experiment that has a control a. Controlled experiment: manipulates variables to see effect b. Comparative experiment: compares un-manipulated data from many sources. Greeks talking about the four elements; the big question was whether mass was infinitely divisible or whether there were atomos (atoms) Next 2000 years, alchemy o these were phonies, but did discover how to prepare mineral acids.