Online Periodic Table and Elements Flash Cards
This is a easy to use website that 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. You type in your answer into the text box and press the 'Check my answer' button. Spelling counts! The website also provides "More options" which you will be able to select whichever elements you want to test yourself on with the flash cards.