Presentation on theme: "Salt, Sugar, or Baking Soda?"— Presentation transcript:
1 Salt, Sugar, or Baking Soda? By:Emily NagleGrade 9
2 IntroductionDo you ever cook pasta? To me it seems like it takes the water forever to boil.That’s why I choose this for my experiment.To put the old myth to the test.
3 ProblemDoes adding salt to water make it boil faster than other chemicals?Talk about where I got my other methods.
4 Research Received information from the sites: http://wiki.answers.com andThey both stated that when salt is added to the water it makes the time to reach the boiling point fasterThese aren't trusted sites. Therefore I wanted to find out for my self if they were really true.
5 HypothesisSalt does make water boil faster than other solutes.
6 Experimental DesignExperiment Variable:Adding Solutes to water
7 Experimental Design Experimental Group: Arm and Hammer baking soda Morton Iodized SaltDomino Sugar
8 Experimental DesignControl Group:Water without any solute.
9 Preparing the WaterLabel each metal pot with the numbers 1-3 (1=salt, 2=sugar, 3= baking soda)Measure out 230 ml of the water into a measuring cupPour the 230 ml of water into the pot
10 Adding the soluteMeasure out 15 grams of salt, sugar, or baking soda and place it into the pot of waterTake the temperature of the water with a thermometer and make sure the water starts at 21 degrees Celsius
11 At the start and finishTurn the dial for the right stove burner to HighStart the stopwatch as soon as the dial lands on the High heatWhen the water reaches the 100 ⁰ C, turn off the stove
12 Recording the Information Step 10: Stop the stopwatchStep 11: Record the time
13 Cleaning up materials Clean up the materials safely and with caution Make sure that you check to see if the stove isn’t hot anymoreWhen it’s not warm anymore, remove the pot and pour it into a sink.Wipe down the stove and put away materials you don’t need.
14 Repeating StepsThe next day at the same time, place a new numbered pot on the stoveRepeat for 3 trails of each solute and for the control variable
15 Experimental Design Control Variables: Amount of water used The starting water temperatureThe size of the cooking potsBrand of the dry ingredients usedAmount of each dry ingredient addedTime of dayThe room temperatureThe amount of altitudeThe type of stove used (quality)
16 My Data: Times to Boiling Event:WaterSaltBaking sodaSugarTrial 1169173167233Trial 2175171163236Trial 3172165181226Average170232* The time is in seconds*
17 My Data: Trial Results* The time is in seconds*
18 ConclusionMy data does support my hypothesis that salt does make water boil faster than other methods.
19 Next time I would…End the experiment when the water begins to boil, not at 100 c.Add more or less of the dry ingredient to the water so it would make the water boil faster.The amounts of solutes (salt and baking soda) used, only increased boil time by 1 percent.
21 Experimental Procedure Step 1: Gather materialsDeer Park bottled waterStopwatchMorton Iodized saltDomino sugarArm and hammer baking soda3 round metal cooking pots each 16.5 centimeters insideOven with stove top (electric/newer model)Pencil or pen
22 Experimental Procedure Step 1: Gather materials continued..Liquid measuring device (holds at least 230 ml)Standard set of measuring spoons (holds at least 15 grams)Pampered Chief digital thermometerPencil or pen
23 My SourcesMy grandmother, Jean BeeryHome Economics teacher, Mrs. O’ConnorPasta Recipes (a cooking book)