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Station Don Lose Your Marbles plunger

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					Chemistry—Ch. 13-14
The Mighty, Mighty KMT Lab

Do not need to turn this part in—will only        Points    Student      Points
turn in last page                                possible   assessment   earned
Heading (name, date, period, lab group)            1
Completion of all parts                            5
Descriptive explanations                           3
Correct explanations                               3
Lab participation/clean up                         3
Total:                                             15

Stations have been set up around the room. At each station, you will perform the experiment indicated.
The experiments can be done in any order. When you arrive at each station:
       1. Read the procedure                          2. Draw well labeled diagram(s)
       3. Describe the changes that occurs            4. Write a possible explanation for the changes
       5. After the notes, complete the explanations using correct terminology.

#1: Can It!
CAUTION! The hotplate may be on (and thus hot) when you arrive. Wear goggles.
    1. Place about 10 mL of water in a clean, empty, aluminum soft-drink can.
    2. Place the can on the hot plate using tongs and bring the water to a rapid boil.
    3. Once steam starts appearing, quickly invert the can into a container of ice-cold water.
    Cleanup: Place the empty can in the recycling bin.

#2: It’s Getting Hot in Here
    CAUTION: The burner may be on when you arrive. Make sure the opening of the balloon forms a
    tight seal on the opening of the flask. Do not allow the balloon to get too hot that it begins to melt.
    1. Light the burner if necessary, and move the burner under the flask.
    2. Heat the bottom of the flask; keep the flame away from the balloon so it does not burn/melt.
    3. Observe any changes that occur in the balloon as you heat the flask for about 30-60 seconds, then move
         the burner away from the flask.
    Cleanup: Leave the burner on for the next group.

#3: Bottled Up
Perform the following experiments over the sink to minimize the mess!
    1. Cover the hole in the side of the plastic bottle with your finger and fill the bottle with water. Replace
       the cap tightly.
    2. Holding the bottle over a sink, remove your finger from the hole. Still holding the bottle over a sink,
       remove the cap.

#4: Breathe Easy
    CAUTION: Do not break the seal. Handle with care.                                                Small balloon
    1. Make sure that the small balloon has formed a tight seal on the
       opening of the plastic bottle.
    2. Gently pull the handle of the stretched balloon downward.                                     Stretched
       Observe what happens to the small balloon inside the plastic                                  balloon
       bottle.
    3. Allow the handle to slowly resume its “resting” position.                                     Handle
       Then, gently push upwards near the handle of the stretched
       balloon.
                                                                                                          2-10-10
    Cleanup: Check the balloons for rips; if you find any, notify the teacher so it can be fixed.



#5: Take the Plunger
    Please treat the syringes and switches gently.
    1. Remove the cap from the “gas syringe” (the dry one), and completely depress the plunger. Pull out the
        plunger to draw air into the barrel. Carefully replace the cap, then push down on the plunger evenly
        with your thumb. Release the plunger and observe.
    2. The “liquid syringe” is already set up for your use. Push down on the plunger evenly with your thumb.
        Release the plunger and observe.
    3. The “solid syringe” is already set up for your use. Push down on the plunger evenly with your thumb.
        Release the plunger and observe.


#6: Hot and Cold
    CAUTION: The hotplate may be on (and thus hot) when you arrive.
    1. Fill one 100-mL beaker with 20 mL of hot water from the beaker on the hotplate by dipping the beaker
        into the larger beaker.
    2. Fill the second 100-mL beaker with 20 mL of cold water from the large ice water beaker. Use the cold
        water only; leave the ice in the large beaker.
    3. Simultaneously add a drop of food coloring to each beaker of water.
    Cleanup: Empty and rinse each 150-mL beaker. If necessary, refill the ice beaker with ice/water and
    the hot water beaker with water from the sink.


#7: The Cartesian Diver
    1. Grasp the bottle with two hands and squeeze it firmly, then release your grip on the bottle.


#8: Got Juice?
    Only one cup of juice per person. Be considerate so that everyone may have experiment.
    1. Fill a cup with juice. Put one end of a straw in the cup of juice; hold another straw outside the cup.
    2. Place the ends of both straws in your mouth and try to use the straws to drink the juice.
    Cleanup: Enjoy the juice, and throw both used straws and the paper cup into the garbage.


#9: High Rise
    1. Leave the tape on the balloons.
    2. Place the un-inflated balloon on the balance. Record the mass of the un-inflated balloon and tape.
    3. Place the inflated balloon on the balance using the tape to hold it in place. Record the mass of the air-
       inflated balloon and tape.
    4. Place the helium-filled balloon on the balance using the tape to hold it in place. Record the mass of the
       helium-inflated balloon and tape.
    Cleanup: Remove the balloon from the balance and make sure all balloons are set up for the next
    group.




                                                                                                         2-10-10
Chemistry—Ch. 13-14
The Mighty, Mighty KMT Lab
                                                               #1: Can It!
Diagram:                    Observations:                     Explanation before covering ch. 13-        Explanation (or gas law) from
                                                              14:                                        ch. 13-14:



                                                       #2: It’s getting hot in here!
Diagram:                    Observations:                     Explanation before covering ch. 13-        Explanation (or gas law) from
                                                              14:                                        ch. 13-14:



                                                             #3: Bottled Up!
Diagram:                    Observations:                     Explanation before covering ch. 13-        Explanation (or gas law) from
                                                              14:                                        ch. 13-14:



                                                           #4: Breathe Easy!
Diagram:                    Observations:                    Explanation before covering ch. 13-         Explanation (or gas law) from
                                                             14:                                         ch. 13-14:



                                                          #5 Take the Plunger!
Diagram:                    Observations:                     Explanation before covering ch. 13-        Explanation (or gas law) from
                                                              14:                                        ch. 13-14:



                                                           #6: Hot and Cold!
Diagram:                    Observations:                    Explanation before covering ch. 13-         Explanation (or gas law) from
                                                             14:                                         ch. 13-14:




                                                          #7: Cartesian Diver!
Diagram:                    Observations:                     Explanation before covering ch. 13-        Explanation (or gas law) from
                                                              14:                                        ch. 13-14:



                                                             #8: Got Juice?
Diagram:                    Observations:                     Explanation before covering ch. 13-        Explanation (or gas law) from
                                                              14:                                        ch. 13-14:



                                                             #9: High Rise!
Diagram:                    Observations:                     Explanation before covering ch. 13-        Explanation (or gas law) from
                                                              14:                                        ch. 13-14:



Rubric: 1 pt heading; 5 pt completion; 3 pt descriptive explanations; 3 pt correct explanations; 3 pt lab participation/clean up = 15 pt
Teacher initials for lab participation/clean up: _____________

                                                                                                                                2-10-10

				
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