On this page you will be asked to use the provided information about one
element to determine a property of a different element. To answer the
questions you will need a periodic table and the table of element densities. To obtain a question, press the "New Question" button and a question appears along with an empty cell and a "Check Answer" Button. Enter your answer and press "Check Answer." Results will be displayed in the table. Pressing "Show Answer" will cause the correct answer to appear and you will no longer be able to submit an answer for that problem.