Opening the book…
Write a minimum one-page (12 font, single spaced) discussion on the experiment conducted this week. Address at least one question in each category as fully as possible integrating the collected data, providing explanations for the observed trends, and evaluating whether your original assumptions about the experiment were validated by the results. The assignment will be graded on completeness, clarity of the explanations and the meaningful integration of the collected and calculated data. Correct grammar and appropriate format for the chemical formulae and chemical reactions is expected. You may use the outline included at the end of this document on how to build your essay to address each category.
- (Existing knowledge, research, and views) Describe the properties of the sand and sodium chloride that were used in the separation process.
- (Analysis) Classify the mixtures created at each step in the process of separating the sand, and salt mixture as homogeneous or heterogeneous.
- (Acquiring competencies) Describe the folding of the filter paper. Provide at least one argument why the folded filter paper would work better than the unfolded one.
- (Acquiring competencies) Describe the main steps in a filtration.
- (Acquiring competencies) Provide at least one argument for washing the solids during filtration.
- (Assumptions) Predict the expected % recovery for your sand and salt. Provide a supported argument for your choice. Provide at least one assumption that must be true to explain the discrepancy between the original and recovered masses.
- (Assumptions) Compare the % recovery from your experiment with the expected % recovery. Provide at least one assumption that must be true to explain the discrepancy between the two values.
- (Existing knowledge, research, and views) Describe a large-scale application of separations that has an impact on our everyday lives.
Recommended discussion outline:
The mixtures we studied in this experiment are … and can be classified as ...
Separation techniques are dependent on the properties of and states of matter. Filtration requires …
In this experiment we assumed ....
In this experiment, we recovered …% of salt and … % of sand. The recovery values of our group are (precise or accurate?), because ...
An application of separation that I found fascinating is … and it works like this: ….
The purpose of the experiment was … By performing this experiment, I learned ...
This page titled 5.4: Discussion was last modified on Wed, 16 Apr 2025 06:21:59 GMT and is shared under a CC BY-NC-SA 4.0 license and was authored, remixed, and/or curated by .
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