This page will present questions describing samples of two elements and ask you to choose which sample meets a specified criterion. For example, "Which will have a larger volume, 3.4 g sample of Fe or a .45 mole sample of
Cr" Using only your periodic table, the popup table of densities and your reasoning, you should determine the correct answer and click on the circle in front of the correct response. The questions will appear when you press the "New Question" button and results and running totals will appear. Since there are only two possible choices, the answer is displayed immediately after your response and you only get a single attempt at any question.