*Periodic Table Big Chemistry Quiz is for Android 1.6 and higher. *You can change tests questions from menu MODE and press NEXT button for new question. *If You will click on the question, you will get off-line help by a dialog and from WIKIPEDIA if You will do click on button WIKI HELP. **You can do a test from: *Atomic symbols *Atomic weight *Atomic number *Year of discovery *Group of element *Melting point *Electron configuration