Msalcedo.weebly.com



MidtermMichelle SalcedoIvy Tech Community CollegeInquiry 1Question: What affect will the Alka-Seltzer have on the balloon when the Alka-Seltzer is poured into the water?Claim: The Alka Seltzer will affect the size of the balloon. Procedure:Take one Alka-Seltzer and measure it at 1 inch. The one inch is measured from top to bottom as if you’re drawling a radius line. Mark the Alka-Seltzer at the one inch with a pen.Cut the Alka-Seltzer in half which its cut where line is marked.Use the graduated cylinder and measure 30 mL of sink water.Take the temperature of the sink water.Put the half of the Alka-Seltzer into the balloon.Once the Alka-Seltzer is in the balloon, smash it twenty times with the palm of your hand (or just smash it).Wrap the balloon around the beaker very carefully without tilting the Alka-Seltzer in. Make sure the balloon has at least ? inches in height wrapped around the top.Grab your stop watch, don’t time yet. Pour the Alka-Seltzer in the balloon into the 30 mL of water in the cylinder (just lift the balloon upward).Grab the stop watch and time 30 seconds.Measure the circumference of the balloon with a measuring tape in centimeters (after the 30 seconds of Alka-Seltzer being poured). Circumference is the distance around something, so start at the tip of tape beginning with 1 cm and wrap it around the balloon until you get to 1 cm.Repeat steps 4-12 (1-3 don’t need to be repeated as you have the other half of this Alka-Seltzer).Observations: There was a chemical reaction. There was normal fizzling and bubbles. For our observations we noted what can be some of our human errors that occurred in this inquiry. We could have not measured the circumference at the same area each time.The room temperature could have changed as the door was open, Not only that, but the room temp could have gone up after we would have produced more body heat (we were in room longer). Evidence: INQUIRY ONE DATATRIAL ONETRIAL TWOTRIAL THREEROOM TEMPERATURE68.5 degrees Fahrenheit75.0 degrees Fahrenheit76.4 degrees FahrenheitWATER TEMPERATURE75.7 degrees Fahrenheit74.4 degrees Fahrenheit74.6 degrees FahrenheitMEASUREMENT19 cm 17 cm19 cmResearch: I’m not quite sure at this point why we got 17 cm on our second trial as the room and water temperature more similar on trial two and three. Trial two and three then both had a circumference measurement of 19 cm. In an Alka-Seltzer website I found out that the best temperature to dissolve Alka-Seltzer is room temperature. The site advised to use 4 ounces of water to dissolve an Alka-Seltzer. This could have caused a difference as we used the 30 mL that would be for just one ounce. We could have used possible just 60 mL if we used half of a tablet. (4 oz. = 118.294 mL, 1oz= 29.573 mL). This site states that cold water would slow down the foam excessively. It advises that if hot water is used, the tablets would not sink to the bottom (the cylinder), however the liquid may appear to bubble over the glass (cylinder), and the tablets are not properly dissolving. It advises that the surfaces of the tablets needs to be submerged completely in the water for rapid dissolution (Bayer Healthcare LLC., 2012, p. 6-7). In another site I found out that a chemical reaction occurs when molecules collide with sufficient energy to break old chemical bonds and form new ones. I also found that temperature is a factor that can influence the speed of a chemical reaction. The site then advises what is in Alka-Seltzer, dried citrus acid and sodium bicarbonate (baking soda). It states that when these chemicals are dissolved in water they react and fizz, this is what occurred in each trial. However, not each trial had the same amount of fizz or reaction. This is because the room and water temperature were different, however they numbers were not much different. This site advises that the biggest fizz (reaction) occurs in warm water. I cannot attest to that as we didn’t change that variable in our trials. What left me wondering was also how they questioned if a crushed Alka-Seltzer made to powder and pouring a whole Alka-Seltzer makes a difference? I wish to know that as we crushed all of ours in each Inquiry (Walker, P., (2010), p.1-2). I can then reference back that the amount of water can be an issue to a smaller chemical reaction (Yahoo, 2010, p.1).Inquiry 2Question: How will the balloon size be affected by adding one whole Alka-Seltzer?Claim: By adding one whole Alka-Seltzer the balloon will increase in size.Procedure: Take one balloon and measure 3 cm up from the bottom of balloon that does not have the opening. Draw a line. That is where you will take your measurement from.Stick one whole Alka-Seltzer it in the balloon.Once the Alka-Seltzer is in the balloon, smash it twenty times with the palm of your hand (or just smash it).Use the graduated cylinder and measure 30 mL of sink water.Measure the room temperature.Take the temperature of the sink water.Once the Alka-Seltzer is in the balloon, smash it twenty times with the palm of your hand (or just smash it).Wrap the balloon around the beaker very carefully without tilting the Alka-Seltzer in. Make sure the balloon has at least ? inches in height wrapped around the top.Grab your stop watch, don’t time yet. Pour the Alka-Seltzer in the balloon into the 30 mL of water in the cylinder (just lift the balloon upward). Grab the stop watch and time for 30 seconds. Measure the circumference of the balloon with a measuring tape in centimeters (after the 30 seconds of Alka-Seltzer being poured). Circumference is the distance around something, so start at the tip of tape beginning with 1 cm and wrap it around the balloon until you get to 1 cm. Repeat steps 1-12.Evidence: INQUIRY TWO DATATRIAL ONETRIAL TWOTRIAL THREEROOM TEMPERATURE74.7 degrees Fahrenheit71.4 degrees Fahrenheit72.1 degrees FahrenheitWATER TEMPERATURE74.6 degrees Fahrenheit74.4 degrees Fahrenheit73.5 degrees FahrenheitMEASUREMENT26 cm24 cm24.5 cmObservation: There was a lot of fizzing and bubbling. A big chemical reaction occurred. The fizzing was really high up the cylinder. If a human error where to have occurred it might have been due to the room and temperature change. Research: In this inquiry I believe our measurements were bigger due to the fact that a whole Alka-Seltzer was used. In a site I was advised that the amount of Alka-Seltzer (NaHCO3/KHCO3) when dissolved in water converts to CO2. It states that in a closed container the CO2 cannot go into open air, there for will go into the top of the balloon. It advises the pressure of the air above the water in the container increases from the trapped CO2. The CO2 molecules collisions increase and the temperature does too. The site states that the amount of water, and the volume of the container (or pressure rating of the container) can make a difference (Yahoo, 2010, p.1). In another site I was advised that the chemical reaction that is formed with the Alka-Seltzer and water has a chemical equation of 3HCO-3 + 3H-----3 H2O + 3CO2. Not only that, but the site also advises that the higher the temperature the faster the molecules move, which there for means bigger reaction (Science Buddies, 2013, p.1). I think the reaction was as such because the temperature was constant and high. There wasn’t even a difference of 1 degree between trials. I think this goes back to also having a good constant room temperature, which is said to be the temperature that water should be dissolved at (Bayer Healthcare LLC., 2012, p. 6).Inquiry 3Question: How will decreasing the water to 20 mL when using ? an Alka-Seltzer affect the balloon size?Claim: The balloon size will decrease compared to the second trial, but increase or remain the same to the first trial. Procedure: 1. Take one Alka-Seltzer and measure it at 1 inch. The one inch is measured from top to bottom as if you’re drawling a radius line. 2. Mark the Alka-Seltzer at the one inch with a pen.3. Cut the Alka-Seltzer in half which its cut where line is marked.4. Use the graduated cylinder and measure 20 mL of sink water.Take the temperature of the sink water.Put the half of the Alka-Seltzer into the balloon.Once the Alka-Seltzer is in the balloon, smash it twenty times with the palm of your hand (or just smash it).Wrap the balloon around the beaker very carefully without tilting the Alka-Seltzer in. Make sure the balloon has at least ? inches in height wrapped around the top.Grab your stop watch, don’t time yet. Pour the Alka-Seltzer in the balloon into the 30 mL of water in the cylinder (just lift the balloon upward).Grab the stop watch and time 30 seconds.Measure the circumference of the balloon with a measuring tape in centimeters (after the 30 seconds of Alka-Seltzer being poured). Circumference is the distance around something, so start at the tip of tape beginning with 1 cm and wrap it around the balloon until you get to 1 cm.Repeat steps 4-12 (1-3 don’t need to be repeated as you have the other half of this Alka-Seltzer).Evidence: INQUIRY THREE DATATRIAL ONETRIAL TWOTRIAL THREEROOM TEMPERATURE75.5 degrees Fahrenheit75.0 degrees Fahrenheit75.2 degrees FahrenheitWATER TEMPERATURE75.0 degrees Fahrenheit76.8 degrees Fahrenheit74.1 degrees FahrenheitMESUREMENT17.5 cm19 cm18.5 cmObservation: There was fizzing and bubbling. The chemical reaction was similar to Inquiry 1, but less than Inquiry 2. Some human errors that could have occurred are:The water was not measured at exactly 20 mL.Room and water temperature change.Research: This inquiry is similar to inquiry one. There was no big change in the measurements of the balloons. The measurements were actually similar and not much different from both of these inquiries. According to the book, An Introduction to Physical Science, a chemical reaction is a change that alters the chemical composition of a substance and hence forms one or more new substances (Shipman, J.T., Wilson, J.D., Higgins, C.A. Jr. (2013) p. G-2). This is what occurred once again when the Alka-Seltzer was poured into the water. According to Bayer’s site we were then advised that when taking an Alka-Seltzer we should use 4 oz. of water (Bayer Healthcare LLC., 2012, p. 6). This could be an issue on why the reaction was not the same as we didn’t once the 2 oz. that would have been needed for half of an Alka-Seltzer. I can then reference back that the amount of water can be an issue (Yahoo, 2010, p.1).ResourcesBayer Healthcare LLC. (2012). Alka-Seltzer Plus. Retrieved from: Buddies. (2012). Plop, Plop, Fizz Fast: The Effect of Temperature on Reaction Time. Retrieved from: Shipman, J.T., Wilson, J.D., Higgins, C.A. Jr. (2013). An Introduction to Physical Science. P. G-2.Walker, P. Wood, E. (2010). Chemical Reactions: Alka-Seltzer and Water Temperature. Retrieved from: . (2010). Antacid (Alka Seltzer) in water? Retrieved from: . ................
................

In order to avoid copyright disputes, this page is only a partial summary.

Google Online Preview   Download