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The decomposition of sodium bicarbonate

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by

Turab Choudhary

on 7 October 2015

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Transcript of The decomposition of sodium bicarbonate

What effect does the amount of baking soda in a test tube have on the circumference of a balloon tied to it after heating?
Hypothesis
Explanation of Hypothesis
Purpose
Independent
Amount of baking soda
Starts at 1 teaspoon and increases by increments of 1/2 a teaspoon.
Control
1. Assembled retort stand and wore safety goggles.
2. Measured 10 mL of acetic acid and poured it into test tube.
3. Added 1 teaspoon of sodium bicarbonate into test tube.
4. Attached test tube to retort stand.
5. Attached balloon to test tube opening.
6. Heated test tube using a Bunsen burner for ten seconds and turned the heat halfway.
7. Stopped the heating process and recorded the circumference of the balloon using measuring tape.
8. Removed test tube and balloon and repeated experiment two more times for better accuracy.
9. Repeated steps 2-8 four more times, except increased amount of baking soda by increments of ½ a teaspoon.
INTRODUCTION
VARIABLES

Method
The decomposition of sodium bicarbonate
Dependent
OBSERVATIONS and conclusion
Graph
Table
After analyzing all the data the final
conclusion is that the our hypothesis was correct the larger the amount of
sodium bicarbonate used the larger the circumference of the balloon
http://antoine.frostburg.edu/chem/senese/101/inorganic/faq/carbonate-decomposition.shtml
http://www.sciencelab.com/msds.php?msdsId=9927258
bibliography
- The circumference of the balloon
- Measured in centimeters
- Amount of Acetic Acid (vinegar)
- Time of Heating
- Amount of Heating


If the amount of baking soda in the test tube increases, then the circumference of a balloon
tied to it will also increase for a ten second
period of heating.
Our hypothesis states that
the larger the amount of
baking soda used the larger
the circumference if the balloon
Full transcript