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Separation of Mixtures
Separation of Mixtures
Experiment 1 studies how to use physical and chemical properties to separate different substances in a mixture. The laboratory assignment includes work that must be completed before the laboratory session and assignments that are completed after the laboratory session.
The assignments that must be completed are the following:
The assignments that must be completed are the following:
Complete the Pre laboratory problems
Laboratory Report of the experiment using the resources listed below
Results quiz in Canvas
Complete the post laboratory Questions and Conclusion paragraph using the RERUNS method
The Virtual Experiment will be used to complete this assignment. There are several small experiments that show either chemical or physical changes using common household materials you can complete or watch the provided videos to complete the observations.
You will also use online simulations and videos to observe several separation techniques and separation of mixture.
The document linked here is the complete Experiment 1 with procedures, pre and post laboratory problems and the laboratory report. The links above are to the documents of each assignment that can be used to submit work in Canvas.
Pre writing Assignment
Pre writing Assignment
The student should complete two assignments before coming to the laboratory discussion. The first is a pre laboratory writing assignment that will be required for several of the laboratory assignments. The pre writing assignment may consist of up to three parts: a purpose statement of what the objectives of the assignment are, a theory paragraph containing background and an understanding of why we are completing this assignment and finally, a summary paragraph of the procedure explaining how the assignment will be completed.
The student should complete a pre laboratory writing assignment for Experiment 1 that contains a summary paragraph of the procedure explaining how the assignment will be completed and a list of the data that must be collected while performing this experiment. Do not answer the question of what you will do, explain how you will complete the assignment.
A pre writing assignment is included in the example of a formal laboratory report at https://docs.google.com/document/d/1BGBPJS3VqNME4cKDrR50HqqrIYZt0sZ9UCg6IrS3MDk
This assignment will only be accepted before the laboratory session begins. No late assignments will be accepted.
DiscussionPreLabAssignment.mp4This is a discussion of what I would like to see in the pre writing assignment
Pre laboratory Problems
Pre laboratory Problems
The pre laboratory problems are questions about the laboratory assignment, background, definitions or procedure and calculations. These problems should be completed BEFORE coming to the class where the assignment will be discussed.
Go to the following website and watch the video about separating mixtures:
https://conceptualacademy.com/course/conceptual-chemistry/36-most-materials-are-mixtures
if the video does not open, click on the image of the video as shown in the picture and it should open. Answer the questions in the prelaboratory problems assignment on this video.
Chemistry References. These are some of the resources to find information about chemicals available online. Search for the physical properties of the chemicals listed in the pre laboratory problem which include sodium chloride, silicon dioxide, vanillin, naphthalene, zinc, copper and ammonium chloride.
Safety Data Sheets in an online search. The Safety Data Sheet also contains some limited information about the chemicals physical and chemical properties.
Appendix A: Physical properties of substances from the laboratory manual
ChemSpider: http://www.chemspider.com/
Wikipedia
The Merck Index is a reference book published by the Royal Society of Chemistry that contains articles and properties on almost every chemical that exists. This Index is available online at https://www.rsc.org/merck-index (subscriptions only)
The Handbook of Chemistry and Physics published by CRC Press contains tables and data about the elements, compounds but also basic values such as density and solubility of pure substance. This handbook is not available online without subscription.
PubChem is a free, searchable resource for accessible chemical information. This resource is available at https://pubchem.ncbi.nlm.nih.gov/
ChemSpider is also a free searchable resource for chemical information. This resource is available at http://www.chemspider.com/
Exp1PreLabQuestions.mp4This is a discussion of the pre laboratory problems
Procedure
Procedure
Complete the individual parts of this laboratory using the resources given below and in the laboratory assignment.
Part A: Chemical and Physical Changes
Part A: Chemical and Physical Changes
The laboratory report of the assignment contains questions, data collection, calculation and reporting of results. Watch the videos or perform these activities with the directions provided in the laboratory assignment. Most of these assignments can be completed with common household materials.
Experiment 1 – Dry sponge in water
Experiment 2 – Water in foil
Experiment 3 – Sugar in foil
Experiment 4: Antacid tablet
Experiment 5: Paper
Experiment 6: Baking soda and lemon juice
Experiment 7: Bending and stretching
Experiment 8: milk and vinegar
Experiment 9: Kool-Aid and water
Experiment 10: Ice
Watch this video of dry ice. https://youtu.be/bNOol7Nh07Y
Experiment 11: Magnets
Experiment 12: Temperature
Experiment 13: An egg in vinegar
More experiments with the egg: https://youtu.be/SrON0nEEWmo
Experiment 14: Rubbing alcohol and water
Experiment 15: Oil and water
Experiment 16 – Penny Experiments
Experiment 17: Dropping out experiment
Experiment 18: Orange Peel
Just for fun: 10 Chemical Reactions that will Blow your mind. https://youtu.be/KNPoBoUt-HM
Part B: Separation techniques
Part B: Separation techniques
The laboratory report of the assignment contains questions, data collection, calculation and reporting of results. Use the website at https://amrita.olabs.edu.in/?sub=73&brch=2&sim=96&cnt=1 to complete the questions about separation techniques.
Read the theory and procedure, then watch the Animation.
Part C: Separation of a mixture
Part C: Separation of a mixture
The laboratory report of the assignment contains questions, data collection, calculation and reporting of results. Use the website at https://amrita.olabs.edu.in/?sub=73&brch=2&sim=39& This website will require registration to view the animation, video or simulator. The registration is free.
Read the theory, procedure and watch the animation. The video shows a real life example of the simulation. We will use the simulation to perform a separation of a mixture of Naphthalene, sand (silicon dioxide) and salt (sodium chloride).
amrita.olabs.edu.in,. (2012). Separation of Components of a Mixture. Retrieved 10 September 2020, from amrita.olabs.edu.in/?sub=73&brch=2&sim=39&cnt=4
Exp1PartC withReportQuiz.mp4This is a discussion of the simulation in Part C and the Report Quiz of results.
Post Laboratory Problems and Conclusion paragraph
Post Laboratory Problems and Conclusion paragraph
The post laboratory problems contains questions that determine your understanding of the laboratory assignment.
While the conclusion paragraph is a summary of what you learned in the assignment. The conclusion paragraph should not just be "this is what I learned" statement but a summary of the assignment, analysis of the data and results of the assignment and critical thinking about what was learned and why it is important. The RERUNS method described in Appendix D gives explanation and examples of the parts of the conclusion paragraph.
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