Baking Soda/Vinegar Lab
Problem:
Does the amount of baking soda affect the amount of gas produced?
IV: Amount of baking soda
DV: The amount of gas produced by the chemical reaction
Research:
Inquiry in Action: Chemical Change. n.d. Web. 15 March 2013. <http://www.inquiryinaction.org/chemistryreview/chemical_change/>.
Hypothesis:
The more baking soda added to the solution, the more gas will be produced.
Materials:
Procedures:
Table/Graph/Analysis:
Does the amount of baking soda affect the amount of gas produced?
IV: Amount of baking soda
DV: The amount of gas produced by the chemical reaction
Research:
- When baking soda and vinegar are combined, a chemical reaction is formed and an entirely new substance is produced.
- Some clues of a chemical change are change in temperature, color, or producing gas.
- Baking soda is a base, while vinegar is an acid.
- When an acid and a base is mixed together, it neutralizes each other.
Inquiry in Action: Chemical Change. n.d. Web. 15 March 2013. <http://www.inquiryinaction.org/chemistryreview/chemical_change/>.
Hypothesis:
The more baking soda added to the solution, the more gas will be produced.
Materials:
- Baking Soda
- Vinegar
- 1 teaspoon + 1/4 teaspoon
- 6 Long balloons (the ones that are used for creating balloon animals)
- Small-headed bottle/container
- Funnel
- Ruler
- Notebook/pencil to record observations
Procedures:
- Pour 2 teaspoons of vinegar into the bottle. Use the funnel to help you.
- Pour 1/8 teaspoon (1/2 of 1/4 teaspoon) of baking soda into one balloon. Use the funnel to help.
- Making sure that no baking soda falls out of the balloon, attach the balloon head to the head of the bottle.
- Once you made sure that the balloon is secure to the bottle, empty out the baking soda from the balloon into the vinegar. Watch the reaction as gas enters the balloon.
- Once there are no more gas entering the balloon, measure how long the balloon is in centimeters with a ruler.
- Record the outcome.
- Empty out the contents, wash the bottle, and throw away the old balloon.
- Repeat steps 1-7.
- Repeat steps 1-8, adding an extra 1/8 teaspoon of baking soda
- Repeat steps 1-8, adding an extra 1/8 teaspoon of baking soda
Table/Graph/Analysis:
The solution with the least baking soda produced the least air, which meant that the balloon height was much smaller. The solution with the most baking soda produced the most air, which meant that the balloon height was much bigger.
Conclusion:
My hypothesis that the more baking soda used, the more gas it will produce which will fill up more of the balloon, is correct. The evidence comes from what I have recorded in the table and in the graph. With only 1/8 tsp of baking soda added to the vinegar, the balloon became about 11.5 cm tall. However, with 3/8 tsp of baking soda added to the vinegar, the balloon became about 27.5 cm tall. This happened because the mass of the products had to balance out the mass of the reactants. The more reactants there are, the more mass it has. The more mass the reactants have, the more mass the products must also have. This means there are more products produced in the reaction. In this case, one of the products is the carbon dioxide, which is the air filling up the balloon.
Conclusion:
My hypothesis that the more baking soda used, the more gas it will produce which will fill up more of the balloon, is correct. The evidence comes from what I have recorded in the table and in the graph. With only 1/8 tsp of baking soda added to the vinegar, the balloon became about 11.5 cm tall. However, with 3/8 tsp of baking soda added to the vinegar, the balloon became about 27.5 cm tall. This happened because the mass of the products had to balance out the mass of the reactants. The more reactants there are, the more mass it has. The more mass the reactants have, the more mass the products must also have. This means there are more products produced in the reaction. In this case, one of the products is the carbon dioxide, which is the air filling up the balloon.