Materials
-sandwich-sized plastic ziplock bag
-graduated cylinder
-paper cup
-rubber band
-measuring spoons
-vinegar
-baking soda
-twist-tie (like the closure for a loaf of bread)
Part 1: The Reaction
1.Use the paper cup during this part of the experiment.
2.Measure out 25.0 mL of vinegar and pour into the cup.
3.Measure out 1/2 tsp. of baking soda using a piece of paper towel to hold the baking soda. In the data table below, record the amount of baking soda used.
4.Add the baking soda to the vinegar slowly. Don't let the bubbles overflow the cup. Observe the reaction and record in the data table.
5. Before moving on to Part 2, answer the analysis questions for Part 1.
Data Table Part 1
Amount of vinegar=
Amount of baking soda =
Observations of reaction=
Part 2: Conserving Mass
1.You may use any of the listed materials for this part of the procedure. If you were to mass the contents before and after the reaction, you would notice that the mass was less after the reaction than before.
2.Based on your answer to #2 in the Part 1 analysis questions, devise a method for repeating the experiment without losing any mass. Use the same amount of reactants, but you may use the different items from the materials list. Part 2 of the analysis questions will ask you to write the procedure that you used.
Analysis Part 1
1.Did mass appear to be conserved during this chemical reaction? In other words, did it look like there was more or less mass than what you started with? Simply describe what you saw, not what you think should have happened. Use complete sentences for your answer.
2.If you could mass the reactants before and after the reaction, you would see that the mass was less after the reaction. Based on what you observed during the reaction, where did the extra mass go? Remember that mass cannot be destroyed in chemical reactions.
3.Please describe how you performed the procedure in Part 2. Your answer should be in paragraph form, third person, and past tense. For example: "Fifty milliliters of water was placed in the flask" not "I placed fifty milliliters of water in the flask". Please be specific when describing your materials and methods.
4.Describe how your experiment might prove that mass was conserved.
PLEASE HELP ME I REALLY DON'T TIME TO DO THIS LAB. PLEASE HELP ME OUT, IM IN NEED OF HELP PLEASE.
Sorry, but you will need to take time! We do not DO the work for you. We HELP after you have made an attempt.
Sra
I understand that you're in need of help with your lab. I can guide you through the steps and provide explanations. Let's start with Part 1: The Reaction.
1. Take the paper cup provided and get the other materials ready.
2. Use the graduated cylinder to measure out exactly 25.0 mL of vinegar and pour it into the cup. Make sure to record this amount in the data table.
3. Use a measuring spoon to measure out 1/2 teaspoon of baking soda. You can hold the baking soda using a piece of paper towel. Record the amount of baking soda used in the data table.
4. Slowly add the measured baking soda to the vinegar in the cup. Be careful not to let the bubbles overflow the cup. Observe the reaction and record your observations in the data table.
5. Before moving on to Part 2, make sure to answer the analysis questions for Part 1.
Now let's move on to Part 2: Conserving Mass.
1. For this part, you can use any of the listed materials provided.
2. Based on your answer to question #2 in the Part 1 analysis questions, devise a method to repeat the experiment without losing any mass. Use the same amounts of reactants, but you can choose to use different items from the materials list. You will write down the procedure you used in Part 2 of the analysis questions.
Now let's take a look at the analysis questions for Part 1:
1. Describe whether the mass appeared to be conserved during the chemical reaction. Focus on what you observed, not what you think should have happened. Use complete sentences.
2. Based on the observations during the reaction, explain where the extra mass went. Remember that mass cannot be destroyed in chemical reactions.
Moving on to analysis question 3:
3. In paragraph form, describe how you performed the procedure in Part 2. Make sure your answer is written in the past tense, third person, and in a descriptive manner. Be specific when describing the materials and methods you used.
Lastly, let's address analysis question 4:
4. Explain how your experiment might prove that mass was conserved.
I hope this explanation helps you complete your lab more easily. If you have any specific questions about the procedure or analysis, feel free to ask!