Source Article:
Apps for Successful Students 
Whether you’re taking a high school chemistry class or you’re a chem. major in college, you’ll need to know the Periodic Table of Elements inside and out. The Chemical Touch will help you remember mass, density, melting point, atomic weight, and more for each chemical. The commercial version has advanced information more suited for college level chemistry, but the free version is useful as well. The Chemical Touch is a solid reference app that will help you succeed in chemistry.
The Chemical Touch
- $0.99
- (Free Lite version also available)
- HS and college
- openscience.org/~chrisfen/Pages/Programs