Lab 2 - Separation of Mixtures & States Of MatterMariah Sanchez, Gabriel Wasserstein, Eric Li, Levan Loria10/23/201
DUE:10/22 A DAY10/23 B DAY10/26 C DAYLab Report Guidelines1.Create a copy of this google doc.2.Share it with your group members.3.Create a cover page that must include all group members’ names, labtitle, and date.2
SEPARATION OF MIXTURES LAB PART ONEClick Link:(allow FLASH)OBJECTIVE: To separate a mixture of sodium chloride and sand using filtrationIntroduction:Pure substances are compounds and elements. A mixture is a physicalcombination of two or more pure substances, in which each substance retains itsindividual chemical characteristics. Sand and salt is an example of a mixture. Thepurpose of this experiment is to separate the salt from the sand mixture and determinethe percentage by mass of sodium chloride (a pure substance) in the salt-sand mixture.Procedure Part 1:AT THE END SUBMIT A SCREENSHOT SHOWING COMPLETION3
RESULTS/CONCLUSIONS PART 1: (must be in paragraph form)● What was the purpose of today’s lab? Explain your procedure.● Is a mixture combined physically or chemically? What techniques can be used to separate mixtures?● Compare the value for the percent of salt recovered after filtering to the initial that was weighed. If themeasurements are different, discuss possible factors that contributed to the difference noted.●What are some sources of error for the procedure of the experiment?● Discuss why adding water to the sand and salt is not an effective method for separationThe purpose of today’s lab experiment was to learn how to separate thecomponents of a mixture. My first task in the lab experiment was to separate thecomponents of a mixture of iron filings, sand, and salt using lab equipment. Thisexperiment had to be completed using the fewest possible steps, the least amount oftime, and the most efficient methods.The first step was to put on a lab coat, protective gloves, and safety goggles. NextI had to decide what material should be removed from the mixture first. I choose toremove iron filings from the mixture by using a magnet to separate the iron filingsinto a beaker. I then choose to remove sand from the mixture by filtering in water.The last step was to remove salt from the water by heating it so the waterevaporates.