Alchemist's Challenge 1.6

Alchemist's Challenge X is a collection of chemistry quizzes designed to help you learn about some of the central features of chemistry. Features: Six types of quizzes or "challenges"Element naming, element symbols, formula naming, formula writing, balancing equations, electron configurations of elements and ions, and ion naming are some of the skills coveredTry the ultimate test--the Alchemist's Challenge--thought-provoking periodic table questions and answersScore tracking, optionally password-protected settings and scoresQuizzes can be timed, have limited guesses, require the correct answer, and be of varying lengthGreat companion to our Periodic Table X software! Mac OS X native version available!
What's new in this version:
Fixes an annoying bug on the quiz selection window, which was introduced in yesterday's version 1.6.