P1 In Lab Worksheet - Chemical Thinking P1 In-Lab Worksheet...

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Chemical Thinking P1 In-Lab Worksheet v3.1 | 1 Project 1 In-Lab Worksheet Your TA’s name: Kexin Li Your name: Lab section: 002L Your email: GRADE ____ /20 p Your Lab Partner: All work must be well-written and organized . If your penmanship is poor, you must type all responses. If you need to organize your thoughts, please use a separate sheet of paper. A major objective of this lab course is to develop skills in scientific communication. Just having an “answer” is not good enough – you must communicate clearly and succinctly and use terms and concepts correctly . 1. Task 2 Validating the Process (12 p) With your lab partner, decide which Task 1 process diagram or flowchart has the most promise. Then devise experiments to confirm or otherwise validate this process/flowchart. The experimental scale must remain on the milli-scale level (1 - 10 mL liquid, 0.25 g of plastic or less ). Otherwise the experimental design is up to you. In the tables provided below clearly indicate what you are testing for, how you are testing for it, what the results are, and your analysis/conclusion from the results . Use your lab notebook to record observations and other details that may prove important in building and implementing your final flowchart. You must conduct enough experimental work to support your final flowchart/process - in this task you are providing “proof of concept” for your separation process based on density as a differentiating characteristic. Table P1: Summary of Experimental Work for the Development of a Density-based Separation Experiment/Test 1 Aspect of the flowchart/diagram being tested. ( What are you testing?) Which of the unknown plastics in the mix float or sink when put into a solution of 30% Sodium Chloride. Brief description of the experimental approach. ( How are you testing it? ) The unknown plastic mix will be placed into an 10mL solution of 30% Sodium Chloride and observations will be made as to which plastics shall float, sink, or remain neurtally buoyant. Results obtained from the experiment. ( What are the results? ) Out of all the plastics in the mix, the green ones were the only ones to sink, which proves that it is the most dense plastic of the mix. The four other plastics in the mix remained floating.
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