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Mixture Separation Lab (gradable) Objective: To separate a mixture into components through a variety of techniques and investigate whether the change is chemical or physical. Materials provided: Filter paper Funnel Magnet in baggie Sample with Styrofoam, salt, and iron filings 50 mL beaker 250 mL beaker Plastic cup Glass stirring rod Sand Watch glass Water Hot Plate Tweezer Barium chloride Sodium carbonate Calcium chloride Instructions: 1. You will find your mixture in your station. With your partner, device a step by step procedure for how you plan to separate these substances. You may change your procedure later, but make note of your changes on your write up. 2. Follow your plan, separating the mixture. Alter your plan as needed. 3. As you separate each substance, set it aside in a cup or beaker so that it can be inspected. 4. Answer the questions. 5. Adding calcium chloride to sodium carbonate and identify the change whether chemical or physical. Questions (to be answered in your lab write up): 1. Who was your partner(s)? (1 points) (same partner of the last lab) 2. What kind of mixture (homogenous or heterogenous) was the sample you started out with in the beginning? Explain how you know. (2 points) 3. What kind of substances were in your sample? Name each sample with one or more words that describe that sample. (ex. water: pure substance, compound) (5 points) 4. What physical properties were different between each component of the mixture? What physical properties were the same? How did you take advantage of these differences? (10 points) 5. For each substance, give a reason why you chose the method you used to separate it (list and explain). (4 points) 6. How did you determine the type of the change when you performed reaction 5? (5 points) Create your own write up on your own sheet of paper (typed is mandatory). The lab report is out of 30 points. a. Your write up should be NEAT and organized (5 pts). b. Your write up should include the following elements: i. Name ii. Title of the lab iii. Objective (2 pts) may be copied from this page iv. Procedure and materials (3 pts) the one you made up yourself v. Answered questions (20 pts) You don’t have to copy the question, just write in complete sentences. vi. Conclusion (10 points): Your conclusion should summarize your findings in this experiment, what you learned, and how you might improve your procedure next time. c. Information for the write up may be taken from this sheet of paper (the lab sheet) d. Information between you and your lab partner may match exactly on your write up except for ‘answered questions’ and ‘conclusion’.