Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button if available to get a clue. Note that you will lose points if you ask for hints or clues!
brimstone burns disinfectnt does not gases green Half Iodine kill light low melts easily nonmetals phosphorus poisonous sublimation sulphur Twenty volcanoes yellow