18 September Science 8 Workday–Summative project–Mixing Ethanol and Water

  1. Mindful moment. Engagement. Initiative. Choice. Building new reasoning pathways.
  2. Review recent blogposts.  4,6,10,12,14 Sept. Send an email to your parents and to Dr. F describing the following:
  • a) How many of the recent 5 dates have an entry in your DSN?
  • b) How many of the recent 5 entries have ALL 7 items included in sufficient detail?
  • c) What items are missing or are inadequately covered?
  • d) How much time you spend outside of class keeping your DSN complete and up-to-date?

3. Preview today’s blogpost.

4. Create entry for today. Today’s entry may be a document that you use for the draft of your summative report.

5. Questions.

  • * * * *

Examine the salt-water evaporation experiment. See the precipitated crystals of NaCl (table salt). Notice their form. Take pictures. Make sketches. KIV (keep in view) as we continue to delve further into The Atomic-Molecular Theory of Matter right after the summative project. How might dissolving, solubility, crystallization, precipitation of a solute from a solution (like the salt in the picture above), and crystal form (notice the cubic shapes of the salt crystals) relate to the explanation of the behavior and properties of matter in terms of particles (atoms-molecules)?

Use class today and Thursday to write your report. Pay close attention to the guidelines. Ask if you are uncertain about the format and style. The report will be due at the beginning of class on Monday 24 September. You will need a paper copy and a digital copy properly uploaded and labeled in your DSN.


Title An Investigation of phenomena associated with the mixing of water and ethanol


Describe study of matter up to this point. Describe original demonstration and your attempt to replicate. Describe class data. 

Question(s) What is a possible explanation for the volume that results from mixing 50 ml water with 50 ml ethanol?


Describe the possible explanation. Describe the consequences that follow if the explanation is true.


Describe everything you did in order to test your explanation. Describe the logic of your test. Describe any measurements. Describe how the data were analyzed. Do NOT present any data. You may include photos to illustrate your procedure(s).


Present all data in an organized fashion. Use tables and graphs where appropriate. If you have photos that show results, you may present them here.


Explain how the results support or challenge (rule out) the possible explanation. Cite specific data to back up your claim. Spell out your argument carefully. How does the idea of particles (atoms and molecules) play a role in your analysis?


Summarize briefly the findings for part one. Raise the question that you will consider for part 2.

Background for part 2.

Question(s) for part 2.

Expectation(s) for part 2.

Procedure(s) for part 2.

Results for part 2.

Analysis for part 2.

Conclusion for parts 1 and 2 combined and integrated.

What have you learned about matter? Relevance of ideas about particles (atoms and molecules) What questions do you now have? Other things you might like to try and why?

You may cite the report below. You may use the report for inspiration on how to write a scientific report. Note: It is missing the conclusion. DO NOT try to copy the report or use it as a template. Follow the guidelines above.

Blogpost for 14 September: http://rfrazier.msblogs.aes.ac.in/2018/09/13/14-september-science-8-summative-investigation-project-mixing-ethanol-and-water/

Blogpost for 12 September: http://rfrazier.msblogs.aes.ac.in/2018/09/12/12-sept-science-8-summative-project-what-happens-when-ethanol-is-mixed-with-water/

Blogpost for 10 September: http://rfrazier.msblogs.aes.ac.in/2018/09/09/10-sept-science-8-beginning-summative-project-1-for-the-study-of-matter/



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