CHEMISTRY I. LAB REPORT
TOPIC: Acids and Bases in the Kitchen
PREPARED BY: MERVE KASIMOĞULLARI 221
06.04.2012
THE GROUP
Merve KASIMOĞULLARI
Zeynep GÜNLER
Nurefşan EFEOĞLU
MERVE KASIMOĞULLARI
06.04.2012
LAB SAFETY RULES
1. Be respectful, follow your teacher's instructions, and don't take
shortcuts.
2. Always get your teacher's permission before attempting any laboratory investigation.
3. Read the procedures carefully, paying attention to safety information and cautionary
statements.
4. As a responsible citizen, be aware of the location of and the procedure for using the
nearest fire alarms, fire-evacuation routes and any other safety equipment, such as fire
blankets and eyewash fountains.
5. Never work alone in the laboratory.
6. Walk with care and keep your work area free from all unnecessary clutter. Keep
backpacks and other belongings at a certain place designated by your teacher.
7. Dress appropriately on lab day, tie back long hair, remove dangling jewelry and wear
closed-toed shoes or sandals in the laboratory. Wear an apron to protect your clothing from
staining, burning, or corrosion if instructed by your teacher.
8. Certain products, like hair spray, are flammable and should not be worn while working
near an open flame.
9. Wear approved safety goggles when working with or around chemicals, any mechanical
device, or any type of flame or heating device. If any substance gets in your eyes or spills
or your skin or clothes, rinse it immediately with water and have someone notify your
teacher.
10. Wear protective gloves or oven mitts to avoid burns.
11. Be trustworthy and never touch, taste, smell or mix any chemicals unless your teacher
instructs you do so.
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MERVE KASIMOĞULLARI
06.04.2012
12. Use knives and other sharp instruments with extreme care. Always cut an object after
placing it on a suitable surface for cutting.
13. Handle plants and animals carefully and wash your hands afterwards. Always treat
animals with care and respect.
14. While using electrical equipment, be careful about the wiring, hanging and damaged
cords. Be sure your hands are dry and the electrical equipment is turned off before
plugging it into the outlet. Turn off all equipment when you are finished using it.
15. Be a responsible and careful scientist by examining glassware to make sure that it is
clean and is free of chips and cracks. Report damaged glassware to your teacher.
16. CLEANUP: Clean your work area before leaving!
Follow your teacher's directions for washing,
unplugging and putting away the equipment. Wash
hands with soap and water after working in the
laboratory.
17. Stay, work and talk to your own group. Don't
leave your group and work area unless instructed by
the teacher. Do not sit on counters or tables.
PURPOSE
The purpose of this experiment is to meet the lab rules, safety procedures and safety
equipments. Actually the most important purpose of this experiment is to see the reaction with
an acid and a base which are used in the kitchen.
HYPOTHESIS
When we mix an acid and a base, we will get salt+ water+ gas.
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MERVE KASIMOĞULLARI
06.04.2012
EQUIPMENT AND MATERIALS
We wore the lab coats and glasses for protecting ourselves from all dangerous chemicals. In
the lab, water is very useful and after the experiment we cleaned the materials with water. We
used acid which is called vinegar and a base which is called carbonate. For mixing them, we
have got a plastic flask. We use the balloon to observe the gas which will be occurred by the
neutralization. Lastly, we use a candle to see the existence of the gas.
EXPERIMENT
Our experiment has three parts.
1) We put a balloon which is filled carbonate to the cap of a flask. This flask contains acetic
acid in it. And then, we pour the carbonate slowly by using the balloon into the flask which
includes 4 % diluted acetic acid. Next we observe that the volume of the balloon is increased
because the inside pressure of the balloon is higher than the outside pressure.
2) We coated the balloon with liquid soap which is cleanser and we put a skewer into the top
and bottom parts of the balloon not to allow the escaping of the gas. This shows that the
balloon is not exploded because of that.
3) We pour the carbon dioxide gas which we obtain during
neutralization into the flame of a candle. Carbon dioxide gas
extinguishes the flame of the candle.
The word and chemical equations for the experiment:
Acid + Alkaline
2CH3COOH + CO3
Salt + Water + Gas
2CH3COO + H2O + CO2
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MERVE KASIMOĞULLARI
06.04.2012
MIXING PROCEDURE
First we put the acid into a plastic flask, and then we pour our base into it slowly by a balloon.
We mix the chemicals by shaking the bottle. Then we put our balloon at the top of the flask to
capture the gas formation. When the experiment was finished, some groups of our class’s
balloons were exploded. Actually, when we were doing this experiment we were not only
enjoyed but also learned for chemistry.
RESULTS
After making this experiment which is related to neutralization, we feel that the flask is
warmed by the energy, the reaction makes bubble off and our balloon is boomed.
CONCLUSION
When an acid reacts with a base, the reaction will give water, salt and a gas- commonly
carbon dioxide-. This reaction is called NEUTRALIZATION.
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MERVE KASIMOĞULLARI
06.04.2012
ACIDS AND BASES IN THE KITCHEN
REFERENCES:
http://science.nsta.org/enewsletter/2003-07/labrules.htm
http://kitchenscience.sci-toys.com/acids
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