A symbol will appear in the box to the right. Click above the white dotted line and type the name of the element. If you are in Zen Mode, as soon as you spell the name out, a new element symbol will appear. If you are in Score Mode, you must hit enter to continue. In score mode, the number in the gray box is how many questions you are trying to get correct in a row. You can go from 5 to 100 by clicking on the box. This also is the number of answers the game will remember.