Baking Soda and Vinegar

  • What was the point of this activity?
  • To introduce the different reactions between Antacid vs. Yeast and allow students to have a better understanding of exothermic reactions.
•Explain how you would introduce this to your class.
 First, I would explain what chemical reactions are and the different forms. Then, I will introduce the activity and ask students to predict how many scoops of antacid until the reaction slows down.
Where do you see a student having difficulty with this?
-Measuring time incorrectly
 -understanding the scientific principles
-Over-filling the amount of antacid.
•What changes or extensions could you do to this activity?
-Use more amount of antacid, newer antacid
Scientific Principle:
Baking soda is a basic compound called sodium bicarbonate. Vinegar contains acetic acid. Mixing baking soda and vinegar gives off an acid-base reaction.  When mixing vinegar and baking soda, hydrogen ions in the vinegar react with the baking soda, sodium and bicarbonate ions. The second reaction is the decomposition reaction, where the carbonic acid decomposes into the water and forms carbon dioxide gas.

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