Physical and Chemical changes during a chemical reaction

 PURPOSE: To become familiar with the laboratory and to make qualitative and quantitative observations about physical and chemical changes during a chemical reaction.
QUESTIONS: What are the chemical and physical reactions when you put aluminum foil in to water that has Copper  sulfate pentahydrate dissolved into it? will the reaction differ if you dissolve the copper  sulfate  in warm or cold water?
HYPOTHESIS: Test and experiment with the different chemicals and observe the physical and chemical changes While making qualitative and quantitative observations. We think the tinfoil will react in the mixture.
                                                            Process in order (chronologically)

Materials

• Beaker (150ml or 250ml)
• Copper (2) sulfate Pentahydrate (Toxic Substance)
• Scoopula
• 100 ml Graduated Cylinder
• Stirring rod 
• Thermometer
• Small Square of aluminum foil
• Sodium benzoate

PROCEDURES

         1. This lab was a duel purpose lab, it reviewed terms and concepts and also brought us into the lab environment. We were in a lab group of three people. We were instructed to wear lab aprons and goggles. Also got a large safety lecture.

         2.We retrieved a beaker (150 ml)  and put some water in to the beaker (above 75 ml), then we got some copper sulfate with our scoopula, we then placed it in the beaker and stirred until it was all dissolved. also we took measurements of the temperature before, during, and after stirring the copper sulfate in. 

         3. Next, we crumpled the aluminum foil in a loose ball and put it in the dissolved copper sulfate solution  and stirred for 15 seconds while making observations of the temperature .

        4. Finally after we stirred the foil in the dissolved copper sulfate we  put a large scoop of sodium chloride from our container into the mixture  and stirred until all of the sodium chloride was dissolved while making detailed observations of the physical and chemical changes.

  DATA

During the experiment our group observed many physical and chemical changes. Such as i observed the temperature stayed around 23 degrees Celsius until we put the sodium chloride in with the foil it jumped to a whopping 48 degrees Celsius. Also the foil reacted and turned a gorgeous red color when we stirred it. When we  observed the different states of matter we saw that we noticed homogenous and heterogeneous  states of matter. Homogeneous was the dissolved copper sulfate pentahydrate in the water. The heterogeneous state was the copper sinking and the foil breaking,  rusting, and tearing into lots of small red  pieces.           

                                                                      DISCUSSION
The data that we collected showed that the temperature of the liquid was 23 degrees, then jumped to 48 degrees with the addition of salt.
During this lab i realized that with the addition of an everyday compound something can rapidly change in temperature. I could compare this to cooking, because if you were using a component like salt and it rapidly reacted with another compound it could screw up your dish that your cooking by adding too much heat or pressure.
Possible errors in the experiment could of been, crumpling tinfoil to much, using to much salt, not using the right amount of water or sodium benzoate.

CONCLUSION

Our hypothesis was 20% right and 80% wrong. we were right that there was gonna be a reaction with the tinfoil but we were wrong where it happened, how it happened and why it happened.

We predicted that a reaction would happen to the tin foil, but it was just a coloring to the foil and a disintegration.

We learned that salt and sodium makes a strong reaction that can eat through small pieces of tin foil.