For this unit, we are moving away from the more abstract, conceptual areas of chemistry and getting into the computations. Our studies will begin with developing a familiarity of the units we typically use in science and then proceed into some analytical techniques. Below are handouts for the work in this unit. For Word files, remember to download and open in Word only.
For Unit 1 we will shift our focus from laboratory safety to matter and its various phases.
Below are materials related to our work, including notes, details about the work we will do, and worksheets. Please feel free to contact me about any concerns or questions.
None of the worksheets are required, although they do provide practice in building and reinforcing the concepts of chemistry that we are focusing on for this unit. As such, there is academic merit to completing them. Notes were provided in class and are also available from the class notetaker, who's blog you can access by clicking the link to the right.
In addition, any science articles of interest for this unit should be added to the comments section of this blog post, and remember to add your name!
This week we had our first days of experimentation in class. It was an exciting, and I was impressed with the level and variety of testing that students used to investigate the substances known as "Oobleck" and Dry Ice.
The purpose of the testing was to investigate the substances and determine the conditions of solids, liquids, and gases. Our guiding learning goals were:
1. Develop a deeper understanding of matter and how it can be described, particularly in relation to the differences between the phases.
2. To gain experience in using the processes of scientific investigation.
Detailed descriptions that describe each day of investigation are below.
PART I reporting criteria:
Share your findings in the comments section to this post either directly typing it in, or by linking the website.
I. Introduction: Briefly describe what the experiment was about, or the purpose to the work. What were you trying to accomplish in this lab (Is Oobleck a solid or liquid?) Include any information that is necessary to understand the work that was done. (Define major terms, such as Oobleck, the various states of matter, etc.)
II. Methods: Describe how you investigated, including what you did and how you did it.
III. Data and Analysis: Write your findings from the investigation. What did you learn from each type of test that was performed? What does the data, or information you gathered suggest, or tell you about what you were testing.
IV. Conclusion: Based off of your findings and analysis, what conclusion(s) can you draw about what you were trying to accomplish. Did you gather enough information to make a definitive judgement about whether Oobleck is a solid or liquid? Why do you think it behaves the way it does? Can you try to use what you know about molecules in solids and liquids to propose a theory to it's behavior?
This doesn't need to be a novel, just try to be accurate and concise.
PART II reporting criteria:
I. Introduction: Why did we do this experimentation? What were we trying to learn? Provide details for any complex concepts or terms.
II. Methods: What did you do? Include details about the experimentation as described by the handout as well as any supplemental experimentation that your group decided to do.
III. Data and Analysis:
1. What did you notice when you placed a piece of dry ice into water?
2. What simple ratio did you find? (check handout for math details)
3. What information did you gather from other experiments or testing?
IV. What did you learn? What does that simple ratio tell you about the difference in distances between molecules in solids and gases?
It does not have to be a huge report - just try to make it clear and concise. Good Luck! I look forward to reading your responses. Remember, add directly to the comments, or link the website.