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Mid-Term AssessmentJeremiah StogsdillIvy Tech Community College of IndianaInquiry 1Initial Question: How does adding ? tablet of Alka-Seltzer to 1 ounce of water effect the balloon?Claim: The balloon size will expand upon addition of Alka-Seltzer to the water.Materials:1/2 Alka-Seltzer tablet30 mL of waterBalloonGraduated cylinderLab tableMeasuring tapeScaleStop watchThermometerProcedures:1. Read the label on Alka-Seltzer to figure out how much water is required for 2 tablets (4 oz. per 2 tablets).2. Cut that amount by ? (1 oz. per ? tablets).3. Convert the water amount in ounces to mL (1 oz. = 30mL).4. Make sure scale is set on 0, weigh 1 tablet, you should get 3.2g.5. Split tablet in half over scale until weight is half of 3.2 g (1.6g).6. Leave remaining Alka-Seltzer in original package to be used for later trials.7. Put large pieces of Alka-Seltzer in 12 in/30.4cm, natural rubber latex balloons (Wal-Mart brand), lift top of scale off and brush remaining particles into balloon.8. Crush pieces of Alka-Seltzer in balloon into powder form or very small pieces.9. Fill graduated cylinder with tap water to 30mL.10. Place cylinder on flat surface of lab table.11. Place thermometer in cylinder, as seen below, to measure the temperature of water to make sure it is between 75 and 76 degrees Fahrenheit. 12. Remove the thermometer.13. Have one member of the group hold down the graduated cylinder while another places the balloon opening over the top of the graduated cylinder until 1 inch of balloon covers the top.14. Reset stop watch to 0.15. One person will lift the balloon to dump the Alka-Seltzer while another person starts and stops the stop watch.16. Observe for 1 minute and 30 seconds.17. When time is up, measure the height of the inflation of the balloon from top to bottom.18. Divide the measurement by 2 and measure the diameter around the balloon in the middle of the height measurement.19. Record measurement. 20. Remove balloon from cylinder.21. Dump out water in sink and rinse cylinder.22. Repeat steps 7-22 two more times to get trials 2 and 3.Evidence:TestDiameter of balloon after 1 minute and 30 secondsAverage of 3 testsTest 17 inchesTest 27.5 inchesTest 37.5 inchesAvg.= 7.33 inchesObservations:1. We do three trials in an effort to compensate for not being able to account for human error.2. We cannot be completely sure that all Alka-Seltzer came out of the balloon.3. The time of 1 minute and 30 seconds is approximate, considering the starting and stopping is not precise.4. The second and third trials could possibly be skewed if extra Alka-Seltzer sticks to the balloon. 5. Alka-Seltzer was getting stuck on the side of the cylinder before reaching the water.6. Balloon may have been stretched out from first and second trials.Research:The main science concept being put to work is gases in this experiment. The balloon inflates in the time allowed for each test, almost as if someone is blowing it up. Often times, it is hard to visualize gases and its existence. This experiment provides a visual aid of gases by giving a result you can see, which is, the balloon filling with air. The Alka-Seltzer dissolves in the water and then begins to fizz. To put simply, the fizzing is caused by a chemical reaction that produces, among other things, carbon dioxide (CO2) gas (UVA Physics Department, 2003). CO2 is a colorless, odorless, and tasteless gas. It is invisible. However, this experiment proves that it indeed takes up space.Inquiry 2Initial Question: How does adding 1 tablet of Alka-Seltzer to 1 ounce of water effect the balloon?Claim: The balloon size will expand, more than 7.5 inches in diameter, upon addition of Alka-Seltzer to the water.Materials:1/2 Alka-Seltzer tablet30 mL of waterBalloonGraduated cylinderLab tableMeasuring tapeScaleStop watchThermometerProcedures:1. Keep the same amount of water for the graduated cylinder (30mL).2. Make sure scale is set on 0, weigh 1 tablet, you should get 3.2g.3. Keep tablet in whole, weigh on scale (3.2 g.)4. Leave remaining Alka-Seltzer in original package to be used for later trials.5. Put large pieces of Alka-Seltzer in 12 inch, Wal-Mart brand latex balloon, lift top of scale off and brush remaining particles into balloon.6. Crush pieces of Alka-Seltzer in balloon into powder form or very small pieces.7. Fill graduated cylinder with tap water to 30mL.8. Place cylinder on flat surface of lab table.9. Place thermometer in cylinder, as seen below, to measure the temperature of water to make sure it is between 75 and 76 degrees Fahrenheit. 10. Remove the thermometer.11. Have one member of the group hold down the graduated cylinder while another places the balloon opening over the top of the graduated cylinder until 1 inch of balloon covers the top.12. Reset stop watch to 0.13. One person will lift the balloon to dump the Alka-Seltzer while another person starts and stops the stop watch.14. Observe for 1 minute and 30 seconds.15. When time is up, measure the height of the inflation of the balloon from top to bottom.16. Divide the measurement by 2 and measure the diameter around the balloon in the middle of the height measurement.17. Record measurement. 18. Remove balloon from cylinder.19. Dump out water in sink and rinse cylinder.20. Repeat steps 5-20 two more times to get trials 2 and 3.Evidence:TestsDiameter of balloon after 1 minute and 30 secondsAverage of 3 testsTrial 110.3 inchesTrial 210.3 inchesTrial 310.3 inchesAvg.= 10.3 inchesObservations:1. We do three trials in an effort to compensate for not being able to account for human error.2. We cannot be completely sure that all Alka-Seltzer came out of the balloon.3. The time of 1 minute and 30 seconds is approximate, considering the starting and stopping is not precise.4. The second and third trials could possibly be skewed if extra Alka-Seltzer sticks to the balloon. 5. Alka-Seltzer was getting stuck on the side of the cylinder before reaching the water.6. Balloon may have been stretched out from first and second trials.7. The avg. increased from inquiry 1 from 7.5 inches to 10.3 inches, in inquiry 2.Research:A science concept here is the formula that pertains to the experiment. When Alka-Seltzer is added to water a formula is resulted from the reaction. C6H8O7 + 3NaHCO3 → 3H2O + 3CO2 + Na3C6H5O7 is the formula. Citric acid + baking soda → water + carbon dioxide + sodium citrate & carbon dioxide is released as a gas (Wikipedia, 2013). The experiment certainly answers the initial question. When you increase the portion of the Alka-Seltzer to the formula, it is apparent that there will be a greater result in gases formed, causing the balloon to inflate more.Inquiry 3Initial Question: How does adding ? tablet of Alka-Seltzer to 100.7 degrees Fahrenheit ounce of water effect the balloon?Claim: The balloon size will expand more than 7.5 inches upon addition of Alka-Seltzer to the heated water.Materials:1/2 Alka-Seltzer tablet30 mL of water (hot tap water)BalloonGraduated cylinderLab tableMeasuring tapeScaleStop watchThermometerProcedures:1. Read the label on Alka-Seltzer to figure out how much water is required for 2 tablets (4 oz. per 2 tablets).2. Cut that amount by ? (1 oz. per ? tablets).3. Convert the water amount in ounces to mL (1 oz. = 30mL).4. Make sure scale is set on 0, weigh 1 tablet, you should get 3.2g.5. Split tablet in half over scale until weight is half of 3.2 g (1.6g).6. Leave remaining Alka-Seltzer in original package to be used for later trials.7. Put large pieces of Alka-Seltzer in 12 inch, Wal-Mart brand latex balloon, lift top of scale off and brush remaining particles into balloon.8. Crush pieces of Alka-Seltzer in balloon into powder form or very small pieces.9. Fill graduated cylinder with tap water to 30mL.10. Place cylinder on flat surface of lab table.11. Place thermometer in cylinder, as seen below, to measure the temperature of water to make sure it is between 100 and 101 degrees Fahrenheit. 12. Remove the thermometer.13. Have one member of the group hold down the graduated cylinder while another places the balloon opening over the top of the graduated cylinder until 1 inch of balloon covers the top.14. Reset stop watch to 0.15. One person will lift the balloon to dump the Alka-Seltzer while another person starts and stops the stop watch.16. Observe for 1 minute and 30 seconds.17. When time is up, measure the height of the inflation of the balloon from top to bottom.18. Divide the measurement by 2 and measure the diameter around the balloon in the middle of the height measurement.19. Record measurement. 20. Remove balloon from cylinder.21. Dump out water in sink and rinse cylinder.22. Repeat steps 7-22 two more times to get trials 2 and 3.Evidence:TestsDiameter of balloon after 1 minute and 30 secondsAverage of 3 testsTrial 17 5/8 inchesTrial 28 inchesTrial 37 1/2 inchesAvg.= 7.7 inchesObservations:1. We do three trials in an effort to compensate for not being able to account for human error.2. We cannot be completely sure that all Alka-Seltzer came out of the balloon.3. The time of 1 minute and 30 seconds is approximate, considering the starting and stopping is not precise.4. The second and third trials could possibly be skewed if extra Alka-Seltzer sticks to the balloon. 5. Alka-Seltzer was getting stuck on the side of the cylinder before reaching the water.6. Balloon may have been stretched out from first and second trials.7. It works well if you let the faucet run for awhile on hot, allowing the temperature to reach well above 100 degrees Fahrenheit, then getting 30 mL in amount and wait til the temperature comes down to 100 degrees to start each trial. 8. After adding the Alka-Seltzer, the bubbles went much higher on the cylinder than any other previous experiments. Research:A chemical reaction is a science concept relevant to this inquiry. In order for a chemical reaction to occur, the particles, atoms or ions, which are reactants, must physically come into contact with one another. Anything that increases the frequency of these encounters will increase the rate at which products are formed (Alka-Seltzer Plus, 2012). In this case, we used the increase in temperature to increase the rate at which products are formed. This explains the increase in size of the inflation of the balloon. Also, we observed the bubbles and how they reached closer to the top of the cylinder more than any other variables tested caused to happen.ReferencesAlka-Seltzer Plus (2012). Alka-Seltzer Plus - Student Science Experiments. Alka-Seltzer -- Alka Seltzer Plus. Retrieved March 25, 2013, from , A. (2013, January 10). Plop, Plop, Fizz Fast: The Effect of Temperature on Reaction Time. Science Fair Project Ideas, Answers, & Tools. Retrieved March 23, 2013, from For Play (2011, June 30). Time for Play: Alka Seltzer and Balloons Experiment. Time for Play. Retrieved March 25, 2013, from physics department (2003). Gases are Real. Galileo. Retrieved March 25, 2013, from , P. (2010). Chemical Reactions: Alka-Seltzer and Water Temperature | . | An Education & Child Development Site for Parents | Parenting & Educational Resource. Retrieved March 25, 2013, from (2013, March 19). Alka-Seltzer. In Wikipedia, the free encyclopedia. Retrieved March 25, 2013, from ................
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