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Salt, Sugar, or Baking Soda?

Salt, Sugar, or Baking Soda?. By: Emily Nagle Grade 9. Introduction. Do 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. Problem.

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Salt, Sugar, or Baking Soda?

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  1. Salt, Sugar, or Baking Soda? By: Emily Nagle Grade 9

  2. Introduction • Do 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. Problem • Does adding salt to water make it boil faster than other chemicals?

  4. Research Received information from the sites: http://wiki.answers.com and http://answers.yahoo.com/question • They both stated that when salt is added to the water it makes the time to reach the boiling point faster • These aren't trusted sites. Therefore I wanted to find out for my self if they were really true.

  5. Hypothesis • Salt does make water boil faster than other solutes.

  6. Experimental Design • Experiment Variable: • Adding Solutes to water

  7. Experimental Design • Experimental Group: • Arm and Hammer baking soda • Morton Iodized Salt • Domino Sugar

  8. Experimental Design • Control Group: • Water without any solute.

  9. Preparing the Water • Label 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 cup • Pour the 230 ml of water into the pot

  10. Adding the solute • Measure out 15 grams of salt, sugar, or baking soda and place it into the pot of water • Take the temperature of the water with a thermometer and make sure the water starts at 21 degrees Celsius

  11. At the start and finish • Turn the dial for the right stove burner to High • Start the stopwatch as soon as the dial lands on the High heat • When the water reaches the 100 ⁰ C, turn off the stove

  12. Recording the Information • Step 10: Stop the stopwatch • Step 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 anymore • When 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 Steps • The next day at the same time, place a new numbered pot on the stove • Repeat for 3 trails of each solute and for the control variable

  15. Experimental Design • Control Variables: • Amount of water used • The starting water temperature • The size of the cooking pots • Brand of the dry ingredients used • Amount of each dry ingredient added • Time of day

  16. My Data: Times to Boiling * The time is in seconds*

  17. My Data: Trial Results * The time is in seconds*

  18. Conclusion • My 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.

  20. The End By: Emily Nagle

  21. Experimental Procedure • Step 1: Gather materials • Deer Park bottled water • Stopwatch • Morton Iodized salt • Domino sugar • Arm and hammer baking soda • 3 round metal cooking pots each 16.5 centimeters inside • Oven 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 thermometer

  23. My Sources • http://answers.yahoo.com/question/index?qid=20090718115652AAnvaHh • My grandmother, Jean Beery • Home Economics teacher, Mrs. O’Connor • http://wiki.answers.com/Q/Does_adding_salt_to_water_make_it_boil_faster • Pasta Recipes (a cooking book)

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