Shusanta BhattaraiMs. KelleyFormal Lab ReportThe Conservation of Mass and How It Is Related to Chemical ReactionsIntroductionIn this lab, we were looking at the conservation of matter, chemical reactions, and using mass to find the number of moles present after a reaction. We had previously studied moles (measurement system) and mass. We took copious notes on the masses of objects after reactions and observed how the quantity “changed” after a chemical reaction. Conservation of mass is a law that states that a mass will remain constant over time and will not change until combined or removed. We have performed many chemical reactions in this laboratory. The first part of the lab involved placing a rolled piece of copper in silver nitrate and washing it off with water. The second and third parts also covered adding chemicals and observing the reactions. The purpose of the experiment was to determine whether the values ​​of silver and silver nitrate would remain the same. The hypothesis was that if chemical elements and compounds reacted the ratio would remain the same, due to conservation of mass and the law it has.ProcedureInitially I was provided with 30cm of copper wire and a test tube. First, the wire was cleaned with steel wool. The copper wire was wrapped around the entire length of the test tube. The copper was then weighed. Then an empty 250ml glass labeled by my partner was weighed. A vial of white silver nitrate was also weighed. Next, 2/5 of the clean glass was filled with distilled water and the solid silver nitrate was mixed with the water until the crystals that had formed dissolved. Then the end of the copper wire was bent so that the coil could be immersed in the solution and still be able to......the central part of the paper......s is attached and the mass must remain constant over time. The chemical process did not change the quantity and it proved it.4. The reports may be different because there may have been a flaw in the procedure. Everyone still surrounds 1 and no one in the class had one, but we all got something similar.5. I think the decanting process was the main source of contamination. Sometimes the water doesn't wash out all the specks. We could purchase a high-tech decanting system and test each student individually so that there is minimal chance of error. Conclusion We saw that regardless of the chemical change, we would get the same ratio. The scope worked great and showed us that the quantity was almost the same. The whole class received a number close to one. The hypothesis was supported because the conservation of matter turned out to be true.