Does Air Have Mass?


Does air have mass?

Try this out and see if the video was correct.


  • Yardstick
  • Two balloons
  • Clothes hanger
  • String


  • Suspend the yardstick, from a hanger by attaching a string to the middle of it. Make sure to find the exact middle of the yardstick.
  • Tape or tie each balloon to the ends of the yardstick. Make sure your yardstick is balanced.
  • Remove one of the balloons and blow it up.
  • Tie a knot to keep it closed.
  • Replace it to the exact same spot on the yardstick.


  • What did you observe about the two balloons?
  • How does this demonstrate that air has mass?