inside diameter of 13mm and outside diameter of 16.5mm
1.) use a magnet cause iron filings are magnetic but aluminum isnt 3.) a filter that allows sand to pass through, but gravel would be too big to pass through 3use acetonepolystyrene dissolves in acetone but not sand4.) get a bunch of antsants will eat and take the sugar, but leave the salt5heat themalcohol vaporizes at a lower temperature than water6 ol them down to below -183 degrees C; oxygen turns a liquid but nitrogen stays as a gas
