This puzzle worksheet reviews properties of the different groups, or families, in the periodic table. I gave this to my students after they completed research about each group. They first color coded the groups in a periodic table, then they drew the same color border around their notes about each group, then they completed the puzzle. For the puzzle, students first answer 15 questions. Then, they gather letters for each answer and unscramble them to find the answer to a riddle question. This worksheet will also work well as a homework assignment.