Surface Tension and air pressure trick

Components: a jar, a card, a net (onion net), toothpicks and
water.
Experiment:

When the card is removed the water stays in the jar because
the molecules of water are joined together, like a thin
membrane between each hole in the net.
Even though the membrane is broken with a toothpick, it is
generated again and again..


Air Pressure: The air pressure is pushing upward harder than
the water is pushing downward.
Surface Tension: http://en.wikipedia.org/wiki/Surface_Tension
Surface tension is caused by the attraction between the
molecules of the liquid by intermolecular forces.