Stop The Leak

Procedure *First fill the bottle (or canister) to the top with water leak out of holes. *Second refill and let the water leak a little bit. *Lastly put the cap on (the water should stop completely)

Observation *When adding water to the bottle with the cap off the water leaked. *The water came out at a constant flow. *As the water leaks out, the bottle contracts. *When you put the cap on the bottle, the leak stops immediately.

Theory *With the cap off, the atmosphere around the bottles opening forces down on the water surface of the bottle. *The “result” is water leaks out of the holes on the side of the bottle. *With the cap on, there is no more force and it stops the leaking. *With the cap on there is no pressure on the bottle therefore less pressure to force the water out.

Conclusion *The air pressure on the outside of the bottle is pushing unto the bottle, therefore it stops the water from leaking out of the holes. *When you put the cap on it stops the pressure from pushing down on the water.

The End

The Gas Experiment

What is used? 600ml beaker 50ml beaker 100ml of water Hot Plate (warning they are hot) John’s law T /\, P /\ / T \/, P\/ ( V is con ) Charles’ law T /\, V /\ / T \/, V \/ ( P is con)

The Process. Fill 600ml beaker with 100ml of water Place 50ml beaker upside down in 600ml beaker Turn on hot plate and place 600ml beaker on hot plate Wait for water to boil and remover 600ml beaker Look at what happens!

Results When the 600ml beaker is pulled off hot plate, the water in the beaker moves into the 50ml beaker. It moves into the smaller beaker due to Temp. and Pres. change. If reheated the water drains itself from the smaller beaker into the 600ml beaker. and again results happen as before.

The End.

"The Power of the Atmosphere" Gas Station #7 "The Power of the Atmosphere"

What Happened: First we took an empty cold pop can and filled it up with 20 mL of water. Then we placed it on a hot plate and let it sit until it started to steam from the top. After the pop can started to steam then we picked up the can with tongs and we flipped the can upside down into a beaker of ice cold water. After placing the pop can in the water then it crushed. Every time we tried it, the can got a whole in it after it crushed.

How it works when the can has water and is boiling on the hot plate steam comes out of the can because it is trying 2 equalize it self with the outside. so Low pressure is being produced when the can in on the cold water. From molecules moving fast to slow a vacuumed is created and water is pulled in. The can is crushed because the pressure is to little for the volume so the there is vacuumed which causes the can to crush.

“Full of hot air?”

What happened? When the water inside the flask began to get hot it raised the hot air molecules into the balloon which caused the balloon to fill up with air.

Why did this work with molecular motion? The temperature from the heated waters gives the flask a higher pressure than the outside air which blew up the balloon to equalize the pressure.

2nd time( Without balloon on top) We boiled the water in the flask without the balloon on top. Than after the water came to a boiling stage we than put the balloon on top and the balloon was taken in to the flask. After that happened we put the flask inside a glass of ice water and the balloon blew up inside of the flask to the shape of the flask.

How did this work with molecular motion? Charles’ Law is the way to explain this stage. As we put the balloon on the hot flask the balloon was pulled inside the flask just a little. Than as we put the flask in the cold water with the balloon, it was pulled into the flask even harder to by the temperature of the cold water. Charles’ Law= Temp. (up), Volume (up) = Temp. (Down), Volume (Down)

THE END!!!!

Brooke, Nate, Mike and Lidia “ The Index Card Show” "the Index Card Show" Brooke, Nate, Mike and Lidia

Procedure 1st fill the Erlenmeyer flask with tap water- all the way to the top 2nd Place an index card on top of the flask 3rd Flip the flask/index card upside down. 4th remove your bottom hand, but leave the index card 1st fill the Erlenmeyer flask with tap water- all the way to the top 2nd Place an index card on top of the flask 3rd Flip the flask/index card upside down. 4th remove your bottom hand, but leave the index card

How it works According to John’s law, the warmer the water the more the paper sticks to the flask The colder the water, the less pressure the paper has to stick on to the flask.