This is a set of 24 cards with questions on the periodic table of elements. An additional 24 cards with the answers are included. This set can be used as flashcards for individuals or groups, or can be used as a review using additional sets available here on this site. You can print the cards using the answer cards printed on the back or print the questions only and provide the answers after the individual or group has answered them all to check for correctness. We suggest that you print them using card stock and them laminate them for years of use. The students really enjoy getting into groups and being challenged.