Refer to the section in the Background titled, "Standard Tests Gaseous Products." Use a flaming splint and a glowing splint to identify the gas above the liquid in the cup. Write the name and formula of the gas in the space provided

Hydrogen (H2) or Oxygen (O2)

Explanation:

If I get the question right, we are to test for the presence of oxygen or hydrogen.

To test for or detect the presence of oxygen; Insert a glowing splinter in a container containing the unknown gas, if the splinter pops or if there is a rekindling of the glowing splinter, then oxygen is present or this indicates the presence of oxygen.

To test for or detect the presence of hydrogen; Insert a flaming splinter in a container or test tube containing the unknown gas, if there is a pop sound or a slight explosion, then the gas present is hydrogen.