Water Quality and Balloon Essay examples

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Kyle Kurtz
Mrs. Gregory
Period 6
April 7, 2013

Exploring Properties of Gases
Pre-lab
1) Purpose The purpose of this lab was to perform a variety of experiments that illustrate some properties of air.
2) Procedure
Station 1: 1. Place the inflated balloon on a balance, using a piece of tape to hold it in place. Record the mass. 2. Record the mass 3. Place the deflated balloon on a balance (with the tape still attached) and record the mass. Station 2: 1.With its open end facing downward, lower an empty drinking glass into a larger container of water. 2. With the open end still under water, slowly tilt the glass. Station 3: 1. Insert the rounded end of an unused balloon part way into an empty soft drink bottle, stretching the balloon’s neck over the mouth of the bottle. 2. Blow up the balloon so that it fills the bottle. 3. Remove and discard the used balloon. 4. Note: If balloon is already attached, blow it up, and wipe it off. Station 4: 1. Fill a test tube to the rim with water. 2. Cover the test tube rim with a piece of plastic. 3. Press down on the plastic to make a tight seal with the mouth of the test rube. 4. While continuing to press the plastic to the test tube, invert the test tube above a sink or a pan. 5. Without causing any jarring, gently remove your fingers from the piece of plastic. 6. Repeat the process with the test tube half-full of water. Station 5: 1. Locate the plastic bottle with a small hole in its side. 2. Cover the hole in the side of the bottle with your finger. 3. Fill the bottle with water. 4. Replace the cap tightly. 5. Holding the bottle over a sink remover your finger from the hole. 6. Still holding the bottle over a sink, remove the cap. Station 6: 1. Put on goggles. 2. Place about 10 mL of water in a clean, empty aluminum soft-drink can. 3. Place the can on a hot plate, and bring the water to a rapid boil. 4. Using tongs to handle the can quickly remove it from the heat and immediately invert it into a container of ice-cold water.

Station 7: 1. Fill the test tube to the rim with water. 2. Cover the test tube opening with a piece of plastic. 3. While continuing to press the plastic to the test tube, invert the test tube and partially immerse it in a container of water. 4. Remover the piece of plastic 5. Move the test tube up and down, keeping the opening of the test tube under water. 6. Repeat the process with the test tube half-full of water. Station 8: 1. Draw air into a syringe. 2. Seal the tip by placing the cap on the end. If the tip is missing, use your finer to seal the syringe. 3. Holding the cap in place gently push the plunger down with your thumb. 4. Release the plunger. Station 9: 1. Use tongs to submerge on inflated balloon in ice water. 2. Use tongs to submerge the other inflated balloon in hot tap water.
3) Prediction
Station 1: The filled up balloon will way more than the deflated balloon.

Station 2: The cup will still contain air.

Station3: You will not be able to bow the balloon up.

Station 4: Water is going to stay in.

Station 5: Water will flow out with cap on or off.

Station 6: Contract inward.

Station 7: Water stays the same and doesn’t change.

Station 8: You will not be able to compress it until half way, and then you can compress it anymore.

Station 9: Balloon will get smaller in cold water and bigger in hot water.
Data
Station 1: After I did the experiment I realized the deflated balloons mass was more than the inflated. The mass of the inflated balloon was 2.7 and the deflated balloons mass was 2.9.

Station 2: Once I put the cup into the water, the cup wouldn’t fill up with water until I tilted the cup and let air into it.
Station 3: I was not able to blow the balloon up because there was no oxygen for the balloon to be blown up in.
Station 4: The piece of plastic stuck to the test tube making it so no
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