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

3. 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.

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

5. 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 1-8 2 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

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

7. 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

8. Melting times graphed in minutes:seconds

9. 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.

10. 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.

11. The end