Salt and it’s effect on the melting of ice EXPERIMENT PERFORMED BY: EZEKIEL PERRY

Question: How does the amount of salt effect the amount of time ice takes to melt? HYPOTHESIS: IF SALT IS ADDED TO ICE THEN THE ICE WILL MELT FASTER THEN IT WOULD WITH LESS SALT ADDED BECAUSE SALT EFFECTS THE RATE AT WHICH ICE MELTS.

Materials  2 glass cups  ¼ measurement cup kosher salt ice tablespoon

PROCEDURE: 1.) GRAB ONE GLASS CUP 2.) GET A STOP WATCH 3.) FOR ONE GLASS GATHER THREE TABLESPOONS OF ICE 4.) FILL ONE GLASS WITH THREE TABLESPOONS OF ICE 5.) GET ¼ CUP OF SALT 6.) POUR ¼ CUP OF SALT IN GLASS 7.) START STOPWATCH 8.) RECORD TIME TAKEN FOR ICE TO MELT 9.) REPEAT STEPS 1,2,3,4,7,8 FOR ICE WITH NO SALT 3 TIMES 10.) REPEAT STEPS MORE TIMES FOR ICE WITH SALT 11.) FIND AVG. TIME TAKEN FOR ICE TO MELT 12.) RECORD AVG AND FIND IF HYPOTHESIS WAS CORRECT OR INCORRECT

MV: Salt RV: Time taken for ice to melt CV: volume of salt CV: volume of ice CV: Glass cups

Data Table of ice with salt vs ice alone time =min:seconds Ice with ¼ cup of saltIce with no salt 1) 19:0127:47 2) 19:2728:12 3) 19:3527:53 Avg. 19:2128:10

Melting times graphed in minutes:seconds

The state standard  The state standard my experiment meets is MS-PS1-4 which states that changes of state occur with variations of temperature or pressure can be described by using a model of matter.

conclusion  Conclusive statement: As a result due to the completion of my experiment I have found my hypothesis to be correct. Salt does effect the rate at which ice melts.  Low condition and average data: I found that ice alone in a glass melts at far longer times then I expected finding times of 27:47, 28:12,and 27:53 which gives an average melting time of 28:10.  High condition and average data: With ice and salt in a glass together the times were still long but not as long as they would be alone. Times I found were at 19:01, 19:27, and 19:35 for an average melting time of 19:21.  Difference: the difference between the low condition and high condition was simple. For the high condition salt was added and as a result the ice melted faster than the low condition which was ice alone.  Explanatory language: The salt(mv) caused the ice(cv) to melt at a faster time or rate(rv) than it would alone.  Relate to the real world: My experiment is connected to the real world because that is where I got the idea for it in the first place. When the roads have snow or are icy construction workers come around and drop salt on the roads, at first I had no idea why, but now I know that salt melts ice quicker than ice melts alone.

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