Regarding homework: We have found as we have maintained this site over the years that some high school and college chemistry students blame their understanding (or rather misunderstanding) of chemistry on their instructor. We believe that most of the responsibility must be laid back on the student. The student is the one who needs to spend extra time on chemistry if they are to master the subject (yes this means to study even when there are no problems due). We also believe that the best place to find help is with your instructor or tutoring program that you may have at your institution. We provide this site as a reference tool when help is not close at hand. This site is not all encompassing or exhaustive, rather it's a starting point for most high school students.