The next chapter to be released of my new book is now available from the iBookstore. Learn Advanced Chemistry: Spectrophotometry, a great introduction to spectrophotometry.

Also available are the iBooks on Chemical Kinetics, Mass Spectrometry, and Liquid Chromatography. Use the iBookstore link below:

Many students are looking for more question to practice to prepare for the AP Test as well as the ACT science test. I have been working with a online review site to generate questions for the ACT Science test you can get more information here:

Daily problems are available weekdays from September 2 to May 3.

I'm sorry--we couldn't identify a Problem of the Day for today.

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