# Buoyancy of Ice Chelsea Fang Cary Academy ABSTRACT The ...

Buoyancy of Ice Chelsea Fang Cary Academy ABSTRACT The ...

MATERIALS & METHODIceTide laundry detergentTap WaterSalt waterVinegarDry IceDiet CokeSunkistBeakerThermometerExperiment 1: Pour 60 mL of tap water, detergent, salt water, vinegar and diet coke into100 mL beakers. Place one piece ice in each type of liquid. Measure how much thevolume increased. Repeat the experiment 3 times.Experiment 2: Pour 60 mL of tap water, salt water, Sunkist, Diet Coke and detergentinto 100 mL beakers. Place a piece of dry ice into each beaker and observe if the dryice sinks or floats.Experiment 3: Pour 60 mL of each liquid into a 100mL beaker. Take the temperature ofthe liquid and add one piece of ice. Take the temperature of the liquid again. Repeatexperiment 3 times.The independent variables for each of the experiments are the liquids and thedependent variable is the effects of the ice.RESULTS & DISSCUSIONFigure 1: Water level rose

For the third experiment the ice was placed in coke, tap water or salt water.The starting temperature was measured and the temperature after the ice was placed inwas measured (Table 2). The starting temperature of the tap water was 22 degreesCelsius and the temperature after was 10 degrees Celsius. The starting temperature ofthe salt water was also 22 degrees Celsius and the temperature after the ice wasdropped in was 10 degrees Celsius as well. The starting temperature for coke was 20degrees Celsius and the ending temperature was 8 degrees Celsius. For thisexperiment it was a relationship experiment because it was looking at the relationshipbetween the temperatures.CONCLUSIONThe hypothesis that the ice would float best in salt water was proved wrongbecause it floated best in the vinegar in this experiment. In reality, salt water has ahigher density than vinegar. So the ice should have had better buoyancy in the saltwater. Most likely the salt was not dissolved properly in the experiment causing theresults to be altered. To improve the experiment more intricate measurements shouldbe made and the experiments could have been performed more to get a more detailedresult. One thing that was interesting was that the dry ice came up as bubbles and thesteam didn’t come out until the bubbles were popped. To further investigate on thistopic, future experiments could include measuring out the densities of the ice and theliquids and compare that way.REFERENCES"Buoyancy." Science of Everyday Things. 2002. Encyclopedia.com. 10 Jan. 2012.Fang, Chelsea. EXPLAIN WHAT HAPPENS TO MOLECULES DURING A PHASECHANGE. Wikispaces.com, September 30, 2011.web. January 10, 2012.Lewis, Peter and Briony Ryles. Introducing Chemistry: Atoms, Molecules, and States ofMatter. Tucson: Brown Bear Books Limited, 2010.print.Wikipedia: Ice. Wikipedia, 15 February 2012. Web. January 10, 2012.

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