It’s Elemental - Element Flash Cards. The computer will give you an element and, depending on the selections you make below, you will have to supply the element’s chemical name, chemical symbol or atomic number. Enter your answer into the text box and press the ‘Check my answer’ button. Remember, spelling counts. Would you like to practice only the first 36 elements? How about just the elements with ’strange’ chemical symbols? If so, press the ‘More options, please!’ button and you will be able to select whichever elements you desire. From Thomas Jefferson National Accelerator Facility - Office of Science Education.