Thursday, 24 October 2013

There Goes the Jar

AGENDA:

  Experiments!

  Instructions experiment #1:

 Step 1: Put a jar underwater wait until it is filled with water.
 Step 2: Turn the jar around so that the opening is facing the bottom of the tank what will happen?

Qualitative Observations: Water stays in the jar.
 Instructions experiment #2:

Step 1: Put the jar underwater until it's half filled with water.
 Step 2: Turn the jar around so that the opening is facing the bottom of the tank.
Step 3: Put another jar fill it to the top of water and turn it so that the opening is facing the bottom of the tank.
Step 4: Put the mouths of both jars together and try pouring the air out.

Qualitative Observations: An air bubble moves from one jar to the other. Air pushes out the water.

                                        Instructions experiment #3:

 Step 1: Inflate one of the balloons to a diameter of about 10 cm.  Deflate it.  Do not tie it!
 Step 2: Practice putting the mouth of the balloon over the mouth of the flask.  
Step 3: Put about 3 scoops of baking soda into the balloon.
Step 4: Measure 10mL of vinegar using the measuring cylinder.
Step 5: Pour the 10mL of vinegar into an Erlenmeyer flask.
 Step 6: Put the balloon over the mouth of the flask.  Empty the baking soda from the balloon into the flask.
Step 7: Wait and let the balloon fill up with gas.  Shake the flask gently to complete the reaction faster.
 Step 8: Remove the balloon and tie a knot in it.


         Qualitative Observations: The vinegar and baking soda formed bubbles witch caused the ballon to inflate. 

Experiment #4

1. Inflate a balloon to about the same size as the balloon in Method 2.
  1. Tie a knot in the balloon.
  2. Compare the gas in the first balloon to the second balloon, and write down your observations.

    Qualitative Observations: The baking soda and vinegar balloon fell faster because it was heavier than just air.
    I wanted to see what would happen if you added much more vinegar and baking soda I found this link.
      Experiment #5

    1. Get a big balloon from Mr. Pro.
    2. Inflate the balloon to a size that’s a little wider than the mouth of the jar.
    3. Submerge the balloon into the water and write down your observations.

      Qualitative Observations: Since water is denser than the balloon the ballon rises and pushes up on your hand.
      Experiment #6
      1. Crumple up half a piece of paper.
      2. Light the paper on fire from the bottom and place it in the jar.
      3. Put the balloon on top of the jar so the mouth is sealed.
      4. Wait until the flame goes out.
      5. Grab and gently pick up the balloon.

        Qualitative Observations: The heat from the fire in the jar pulls the balloon into the jar. IT WON'T COME OUT!!!

1 comment:

  1. Include the introduction to air. Remember the quick breath-holding experiment.

    ReplyDelete

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