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Name__________________________________________________ Period______________________ Separating a Mixture Dr. Slotsky Honors Chemistry I Goals: Separate a mixture of salt and sand which has been given to you by your instructor and determine the percentage of salt in the mixture by weight. Note: please LIMIT the amount of water you use. Remember that it can take a very long time to evaporate a solution, and this time will increase the more volume you have. You may not have time to evaporate a liter of water during a single period! Use the minimum volume necessary. Notes: (write down a record of what you did during this lab period) Mixture tare mass (empty beaker) ___________ grams Mixture in beaker _________________________grams Net mass of mixture _______________________grams Salt tare mass (empty beaker) ______________grams Salt in beaker____________________________grams Net mass of salt __________________________grams Percentage of salt ( mass of salt times 100 divided by mass of mixture) ____% Writeup (attach a separate sheet if necessary.): Please write up what happened in this experiment. Include: 1) Did you separate the salt from the sand? What steps did you follow? 2) Did you perform any chemical changes, or only physical changes, during this lab? Why? Cite textbook as necessary to answer.