Project Design Plan
Everyone knows that water boils at 212°F, but does adding salt to a pot of water make it boil at a higher temperature? Being a person that cooks frequently at home, I wanted to test the debated idea that adding salt to my water will make it boil faster. One of my friends says it does raise the temperature and therefore cooks it faster. My other friend says it only helps it taste better.
Literature Review
Table salt is often added to water before the boiling process in hopes that the water will boil faster. It has been argued that the boiling temperature difference is insignificant with a small pot of water. However, when adding salt to …show more content…
Process of Data Collection
Boiling Point of Two Cups of Water
Amount of salt added (IV)
Temperature of boiling water in Fahrenheit (DV)
No Salt (Control)
212.7°F
1 Tablespoon Salt Run #1
214.9°F
1 Tablespoon Salt Run #2
215.3°F
1 Tablespoon Salt Run #3
215.1°F
As predicted, adding salt to water does raise the boiling temperature of the water, even if only minimally. Variations in the boiling temperature may be contributed to slight variations in the measurements of the salt added to the water. It is important to measure both the water and salt accurately to ensure accurate results.
Appropriate Methods
For each run, 2 cups of water were added to a 2 quart saucepan; 1 tablespoon of salt was then added to the water and stirred to mix the two ingredients together. The saucepan was then put on the stove and brought to a boil. Once the water reached a full boil the final temperature was recorded using a Go-Temp thermometer. The tools and methods used in this are appropriate to the experiment. …show more content…
Adding table salt to water causes the water to boil at a higher temperature. The temperature readings were hard to make. Oven mitts had to be worn to keep my hands from getting burned. I had to be sure that the thermometer wasn’t too close to the stove or the temperature would be skewed.
Experimental Design as a Key Factor
How you design your experiment is key to helping you keep your results reliable and valid. You only need one independent variable. If you have more than one, you won’t know which one is actually affecting your results, it will also be harder to measure. Making as many variables as possible constant will help increase the reliability of the experiment.
Replication
By following this plan and report, you can replicate this experiment. One might try adding different amounts of salt to see if there is a point at which the amount of salt added stops increasing the boiling point.
Evaluation of Validity
Replicating this experiment will add to the validity of my results and others results. If the experiment is replicated numerous times this will add to the validity, resulting in a more accurate conclusion. It is important to measure both the water and salt accurately to ensure that the results collected are as accurate as