Stop the Leak

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Stop the Leak
2
Observations

• When adding water to the bottle with the cap off,
  the water leaked.
• The water came out at a steady flow.
• As the water leaked out, the bottle contracted.
• When you put the cap on the bottle, the leak
  stopped completely.

3
Theory

• With the cap off, the atmosphere around the
  bottle opening forces down on the water surface
  in the bottle.
• The result is water leaks out of the hole from
  opening of the side of the bottle.
• With the cap on there is no more force coming in
  and it stops the leaking.
• With the cap on there is no pressure on the gas
  particles in the bottle in therefore less
  pressure to force the water out.

4
Conclusion

• There is air pressure on the outside of the
  bottle that is pushing into the bottle, therefore
  it keeps the water from leaking.

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The Index Card Show
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Experiment

• Place an index card on the top of the flask
• Flip the flask/index card upside down.
• Remove your bottom hand, but leave the index card
  alone.

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How does this work

• The force of the air on the flask and the note
  card and the water is more on the outside so
  thats why it keeps it up, so if you dont put
  the flask full of water the air is also pushing
  on the note card and air is heavier then water so
  the air wont have a higher pressure pushing on to
  the note card to keep it up

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• The note card held the water, and the note card
  stayed on the flask.

Of, relating to, or consisting of molecules
The act or process of changing position or
place.
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Full of Hot Air?
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What Happens to The Balloon?

• The balloon is on the top of the Erlenmeyer
  flask.
• When the Erlenmeyer flask is on the hot plate the
  steam from the boiling water inflates the
  balloon.

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Ice Cold

• After you let the flask cool down in the ice bath
  you then put the flask back onto the hot plate
  but with no balloon.
• Once the water is at a boil you then take the
  flask off the hot plate and place it on to the
  table.

• You then place the balloon over the flask and you
  see the balloon inflate slowly.
• Then after it inflates you place the flask back
  into the ice bath and watch the balloon inflate
  into the flask.

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How it WORKS!

• The balloon inflates because the boiling water
  gives off a gas to inflate it.
• Then when the flask in the cold water with the
  balloon, it will start to deflate into the flask.
  There is low pressure in the cold water and there
  is high pressure out side of the flask.

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Molecular Motion

• Pressure- The gas from the steam inflates the
  balloon because the molecules have no where to
  go.
• Volume- As more air malicious come inside of the
  balloon the balloon gets bigger and the balloon
  needs more room.
• Temperature- When water is at the boiling
  temperature gas is formed and there is high
  pressure made. When is the cold water there is
  low pressure.

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Pictures
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The Mysterious Water
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• 4) We then put the beakers on the hot plate
• 5) The heat makes the air trapped in the smaller
  beaker expand (when air heats up it expands).

• 1) Start off with a 500mL beaker with 100mL of
  water.
• 2) we put blue food dye in the water.
• 3) then put a 40mL beaker in the bigger beaker.

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• 6) The air is pushing down on the water inside
  the small beaker.
• 7) Due to the fact that they need equal out the
  pressure
• 8) So air is escaping from the inside beaker

• 9) Then when you cool it down the air molecules
  come closer together and slow down.
• 10) After that water fills up in the smaller
  beaker. Because there is less pressure inside so
  it equals out from the outside.

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The Can Crush!
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experiment
We heated a can with 20 mL if water on a hot
plate. After steam came out, we placed the hot
can in ice water. A popped noise happened and
then the walls of the can crushed in on
themselves.
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The pressure inside the can goes up when the can
is hot. And the pressure in the ice water is
low. So when the two meet, a violent reaction
occurs, and the change in temperature makes the
can implode. the pressure makes the can
implode
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Observations
the can heated up, then steam came out of it.
then we put it in the cold ice bath and the can
totally imploded.
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• we think this happened cause a lot of pressure
  builds on the inside of the can. then when you
  put the can in the cold water, all of the
  pressure rushes out of the can.