The Atom: PhET Simulation and YouTube videos

All homework is due in class on Tuesday, Dec. 2, 2013.
Happy Thanksgiving!! Please return safely to school.
 
READ: Trefil texbook
Chapter 8: The Atom: Why are there so many different materials in the world?
Chapter 9. Quantum Mechanics: How can the electron behave like both a particle and a wave?
 
1. Individually, complete the PhET Simulation handout (dropbox) using the Models of Hydrogen Atom activity: http://phet.colorado.edu/en/simulation/hydrogen-atom.
Answer the questions and submit to the dropbox.
Come prepared to discuss what you've observed.
 
2. Homework Assignment: Each team has been assigned a set of YouTube videos on a historical, groundbreaking experiment in the 19th and 20th century. The videos provide a visual synopsis of the experimental ideas palatable for a broad audience.
 
Each team will conduct research on their assigned experiment to develop expertise associated with the experimental concept. In class, you will be re-assigned to a new group to teach the new group about this historical experiment and its significance to the development of our current understanding of the nature of the atom.
 
By the beginning of class, you should be able to:

a.       Identify the name of the experiment and the chief scientists involved

b.      Explain the key elements of the experimental set-up; instruments and/or equipment involved; what was measured; how measurement occurred; and why it was measured

c.       Distinguish clearly between

a.       the experimental data generated

b.      the evidence drawn using the experimental data, and

c.       the inference made using prior knowledge about the nature of the atom

d.      What conclusion(s) did the experimenter draw?

e.       Describe the significance of the experiment to the development of current understanding of the nature of the atom

 

 
Team 1: Kymberly, Michelle, Dylan
https://www.youtube.com/watch?v=7GTCus7KTb0
https://www.youtube.com/watch?v=Xmq_FJd1oUQ
Team 2: Will, John, Anna
http://www.youtube.com/watch?v=MG4h0z8zvv4
http://www.youtube.com/watch?v=0qKrOF-gJZ4
Team 3: Lamees, April, Brandon
https://www.youtube.com/watch?v=2xKZRpAsWL8
https://www.youtube.com/watch?v=JUJPyQtoB5E
Team 4: Lindsey, Hayden, Ryan
https://www.youtube.com/watch?v=XBqHkraf8iE
https://www.youtube.com/watch?v=ecsgC1wSp5I

In-class Assignment: Each member of a team will be assigned to a group during class. Your function will be to communicate your knowledge about your historical experiment to the group. Your group will be given a handout that identifies a series of question to turn in during class.
Group A: Kymberly, Will, Lamees, Lindsey
Group B: Michelle, John, April, Hayden
Group C: Dylan, Anna, Brandon, Ryan

Nature of the Atom Resources

Nature of the Atom: Resources  

• Light: http://www.cosmosportal.org/files/51501_51600/51526/file_51526.jpg
• Models of hydrogen atom: http://phet.colorado.edu/en/simulation/hydrogen-atom
• The Chem1 Online Textbook: Atomic Structure and the Periodic Table (html)
• Video Lectures: MIT (html)
  • Lecture 1: Atomic Theory of Matter (html)
  • Lecture 2: Discovery of Nucleus (html)
  • Lecture 3: Wave-Particle Duality of Radiation and Matter (html)
  • Lecture 4: Particle-Like Nature of Light (html)

The Atom: Pudding & Clouds

Homework is due in class on Monday, November 25, 2013 on/before noon. (I changed the due date so that I could spread out the homwork due.

READ: Trefil texbook
Chapter 8: The Atom: Why are there so many different materials in the world?
Chapter 9. Quantum Mechanics: How can the electron behave like both a particle and a wave?

1. Where does light come from? (no less than 250 words)
In your teams and using your explanations developed in class about the nature of the atom  develop a sound, reasonable argument justifying where light comes from.
How do you know?
Post-It images are in your Dropbox file.


2. Nature of the Atom Activity
In your class teams of three, complete the activity started in class.
Images of your Post-Its are in the DropBox file, ATOMS.
The document is also in the dropbox.
Submit to the dropbox with all team members' names.


3. Pudding and Clouds - team assignment
In your class teamsof three, complete the assignment - Scenario: Pudings & Clouds.
-It is important that you conduct some research on the actual experiments that provided evidence that led scientists to develop each model.
-Use the relationship between indirect, evidence, and inference to answer the question. (Note: Each response has a unique set of values, for example, 3-A or 4-E; numbers and letters are never duplicated. All letters and numbers must be used.)
Submit to the dropbox with all team members' names.

Lab Investigation of Color Mixing

Please submit repsonses to the following assignment at the DropBox Homework file on/before 12:00 noon on Monday, Novemeber 18, 2013.


Supplemental InstructionJennifer, the SI will be available to help with concepts.
Note: The goal of the SI session is to help answer your questions about the concepts in the homework. If you have no questions, she will be unable to help you.
SI meets in Kilpatrick 223 from 6:00-8:00 pm. Note time.

Figure 1: Observation from color mixing activity

Homework

1. During lab, we mixed colors and made observations.

  a. Using the STEM Writing Framework, follow the steps; use everyone’s data, not just your own (see Figure 1).

b. Organize the data using a table or chart.

c.. Describe the findings using scientific language. You will choose from the words on our “word wall” (see Figure 2). Use the scientific terms such as frequency or wavelength rather than color, etc..

Figure 2: Word Wall

 

2. In the lab, we used transparent colors (please make sure you know what transparent means, not the definition, but what it means.). 

 a. If you held up a jar of transparent red solution to your eye, and looked through it, what would you see?  Please explain the way light would behave in this situation. Words that might appear in your explanation would be transmission, transparency, frequency/wavelength, absorbance, reflection, and other words from the word wall.

b. If we used opaque colors instead, what do you predict and how would the results would have been differ?

3. The primary colors of light are RGB. The primary colors of paint are RYB.

a. Please describe what insight this provides to you when you think about the behavior of pigment (as in paint) and the behavior of light.

b. Does color exist before it gets to the eye? Explain.

c. What is vision? Why does vision require light? Please do not discuss rods and cones.

4. During lab, you played with slime and oobleck. The data below shows your observations for oobleck and you collected your observations for slime independently in your lab notebooks.

Figure 3: Observation from color mixing activity

 

What is your explanation for the behavior of non-Newtonian fluids? Use the STEM Writing Heuristic to make claims.

 

Light Tour of Milledgeville and Spectral Tubes

Figure 1: Light Tour of Milledgeville

Supplemental Instruction
Jennifer, the SI will be available to help with concepts.
SI meets in Kilpatrick 223 from 5:00-6:30 pm.

Reading
Read Chapter 6: Trefil textbook: Waves and Electromagnetic Radiation.
View other reources, such as:
http://www.youtube.com/watch?v=rLNM8zI4Q_M
Jennifer Deardorff will be available for SI to help with concepts.


Light Tour of Milledgeville
The image above (Figure 1) shows what you observed for some light sources during the tour.
The image below illustrates the questions that you posed from the Light Tour.

 Figure 1: Questions from Light Tour

Using information from the readings, the discussion, the SI sessions, and other resources, please respond to the following questions:

1. Choose a question from the list that you have an interest in understanding. What do you suppose is a reasonable scientific explanation for the phenomenon that you observed associated with that question.

2. Which of the following is a characteristic of high-energy radiation? For each option, briefly describe your rationale for choosing or not choosing the option.
(a) long wavelengths 
(b) high velocity 
(c) high frequency 
(d) high amplitude 
(e) all of the above

3. A photon is a packet of light. Can you describe light as a packets? Provide scientific justification for your response.

4. Who was Planck? What was his contribution to the understanding of light?

5. Calculate the frequency of a wave that has energy of 1.32 x 10^-23 J/photon.
(please show correct SI units and all work for full credit)

6. A photon is a packet of light. Mercury gas shows several types of photons including an intense green spectral line at 546 nm. Recall that 1 nm = 1 nanometer. Calculate the energy (in J) of a single photon of green light.  (please show correct SI units and all work for full credit)



Spectral Tubes
We also "looked" at spectral tubes, namely hydrogen, helium, neon, carbon dioxide, and argon.

Using the data above and other resources answer the following questions (note that you can find spectral images online similar to what you observed during class):

1. What do you observe that is similar and/or different between the gases?


2. What do you think the colored lines represent in the spectral tubes?


3. What do you think the dark spaces between the color lines represent?


Below is an image of the spectral lines from the sun, hydrogen gas, helium gas, mercury gas and uranium gas as a reference.

Lab proposals, science & culture

Per emails sent last week
This week only, I am willing to allow an extension of assignment #3 to be submitted on/before 5:00 pm on Tuesday, Nov. 5, 2013:
           3. Reading assignment (Warren and Rosebery textbook): all parts.
This means that we're expecting outstanding chart outcomes for this assignment. Please bring a paper copy as well to class.
1. Density data: due Monday on/before noon
From our discussion last night, the lab design led to a large variation in density data. You will propose a re-design of the density lab activity to collect better data. Include what you will need in terms of materials and supplies. A procedural format is acceptable.
The supplemental instructor will be available to help facilitate questions.

2. Stations Lab Activity (10/29/13): due Monday on/before noon
For ALL of the lab activities that you conducted, submit a two-page, single-spaced document that responds to the following:
a. Develop a question for each activity/station based on YOUR observations. Connect the ideas from the questions and create a question that you would like to investigate
B. Develop a proposal/plan for how you would test your question
C. Identify materials/supplies you will use to test your question
D. Work with the SI to develop plan

3. Reading assignment (Rosebery & Warren's textbook): due Tuesday
Chaps 10 - Essay: What is Culture?
Chaps 11 - Using Teachers Cultural Research in Teaching
a. Read your assignment in pairs (assigned below)
b. Make explicit connections between activities in PHSC 4010 and the chaps in the book.
c. Create a chart explicitly mapping/connecting 10 ideas that you have identified from the readings with evidence of how the concepts from the reading were represented through class activities.

Teams:1. April and Will
2. Brandon and Ryan
3. Michelle and
4. John and Kymberly
5. Anna and Lindsay
6. Dylan and Lamees

Density Data: post here

Post your mass/volume data for each element as a comment.

Due: on/before 12:00 noon, Monday, October 28, 2013