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Reaction in a zip Bag

Part 3. Reaction in a zip Bag. What might happen if you put calcium chloride, baking soda, and water in a bag like this?. Question:. 1. Measure and place in bag: 5 mL of calcium chloride and baking soda.

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Reaction in a zip Bag

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  1. Part 3 Reaction in a zip Bag

  2. What might happen if you put calcium chloride, baking soda, and water in a bag like this? Question:

  3. 1. Measure and place in bag: 5 mL of calcium chloride and baking soda. 2. Close the bag except for an opening just big enough to insert the syringe. Press all the air out of the bag. 3. Quickly add 50mL of water to mixture and immediately seal the bag. Procedure:

  4. 1. What happened to the bag? 2. What made the bag puff up like a pillow? 3. Where did the gas come from? Observations:

  5. 4. What did you find out by doing the reaction in the bag that you couldn’t find out doing the reaction in a cup? 5. How much gas formed as a result of the reaction? 6. How does the volume of gas compare to the volume of chemicals you put into the bags?

  6. What were the reactants that produced the gas and precipitate in the reaction we just observed? Reactants: the chemicals that react when mixed together.

  7. What might happen if you repeat the bag investigation with citric acid & baking soda? Try it!

  8. 1. Measure and place in bag: 5 mL of citric acid and baking soda. 2. Close the bag except for an opening just big enough to insert the syringe. Press all the air out of the bag. 3. Quickly add 50mL of water to mixture and immediately seal the bag. Procedure:

  9. 1. What was different in the reactants (starting chemicals) between the two bag experiments? 2. Which reaction produced more gas? How do you know? 3. What do you think will happen if we do the bag experiment with all three chemicals? Questions?

  10. Document your observations 3 Chemical experiment

  11. Is the precipitate from the 3 reactant experiment chalk? How can you test? Precipitate

  12. Calcium citrate !!! And the Precipitate is… • Calcium citrate is used as a water softener and to prevent and to treat calcium deficiencies.

  13. Reactants: the starting materials in a chemical reaction. calcium chloride + citric acid + baking soda + water Word Bank • Products: the ending materials in a chemical reaction. calcium citrate

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