Chemistry Assignment - Electrochemistry

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timer Asked: Apr 26th, 2017
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Question Description

There are five questions all pertaining to electrochemistry. All work must be 100% original. All parts of all questions MUST be answered. Rubrics are provided and must be followed. If a graph is required it has to be handwritten.

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` Complete 8 points Sufficient 6 points Partial 4 points Falls Below 2 points Missing 0 points Identify parts of a Make sure to answer Make sure to answer Question 1 voltaic cell. Make all parts of the all parts of the sure to answer all question. question. parts of the question. Make sure to answer all parts of the question. Make sure to answer all parts of the question. Identify the parts of a Make sure to answer Make sure to answer dry cell. Make sure Question 2 all parts of the all parts of the to answer all parts of question. question. the question. Make sure to answer all parts of the question. Make sure to answer all parts of the question. Distinguish between dry cells and voltaic Make sure to fill in Make sure to fill in Question 3 cells. Make sure to the table completely. the table completely. fill in the table completely. Make sure to fill in Make sure to fill in the the table table completely. completely. Identify the parts of an electrolytic Question 4 cell. Make sure to answer all parts of the question. Make sure to answer all parts of the question. Make sure to Make sure to answer all parts of the answer all parts of the question. question. Explain how to refine metals using an electrolytic Make sure to include Make sure to include Question 5 cell. Make sure to a labeled diagram. a labeled diagram. include a labeled diagram. Overall Score 100% 40 or more Grade A 36 or more Grade B 32 or more Make sure to answer all parts of the question. Make sure to Make sure to include a include a labeled labeled diagram. diagram. Grade C 28 or more Grade D 24 or more Grade F 0 or more ` Purpose Exceeds 0.2 points ` Language Falls Below 0.12 points Falls Far Below 0 points The response doesn’t The response exhibits address the controlling limited understanding and idea, demonstrating interpretation of the misunderstanding of the controlling idea. controlling idea. This response does not meet unit objectives for purpose. The response addresses most aspects of the prompt, however one part of the answer may not be fully developed, showing limited understanding of the topic and text. The response addresses some aspects of the prompt, but leaving significant parts to be underdeveloped. Response demonstrates very limited understanding of the topic and text. The response does not address the prompt. Significant parts are underdeveloped and demonstrate unfamiliarity with the text This response does not meet unit objectives for elaboration. The response provides relevant and thorough textual evidence, smoothly integrated to support all aspects of the prompt. Evidence supports all aspects of the prompt and is clearly explained. The response provides relevant and thorough textual evidence that may not be smoothly integrated. Evidence supports all aspects of the prompt and is clearly explained. The response includes some textual evidence that may not be smoothly integrated. Relevance of evidence may not be clearly and fully explained to show support of the prompt. The response is lacking textual evidence, either paraphrased or quoted, even though the prompt is addressed. This response does not meet unit objectives for textual evidence. Exceeds 0.2 points Meets 0.16 points Approaching 0.14 points The response consistently uses formal and precise language, varied sentence structure, and academic and domain-specific vocabulary There are no errors in grammar, spelling, punctuation, or Conventions sentence structure. Writing exhibits no patterns of error. Overall Score Approaching 0.14 points The response exhibits acceptable understanding and interpretation of the controlling idea. The response exhibits thorough, accurate understanding and interpretation of controlling idea. The response is fully developed with detail that Elaboration demonstrates an understanding of the topic and text. Evidence Meets 0.16 points Exceeds 0.9 or more Falls Below 0.12 points Falls Far Below 0 points The response uses formal and precise language, but not consistently. Sentence structure is varied and vocabulary is academic and domain-specific. The response is written using informal language with basic use of sentence structure and some academic vocabulary. The response uses informal language, and may include cultural colloquialisms. Sentence structure is very basic and academic vocabulary is not present. This response does not meet unit objectives for language. There are very few errors in grammar, spelling, punctuation, or sentence structure, they do not interfere with readability. Writing exhibits no patterns of error. There are some errors in grammar, spelling, punctuation, or sentence structure, they interfere with readability, but not purpose. Writing exhibits minor patterns of error. There are several errors in grammar, spelling, punctuation, or sentence structure, they interfere with readability, and purpose. Writing exhibits patterns of error. This response does not meet unit objectives for conventions. Meets 0.8 or more Approaching 0.7 or more Falls Below 0.6 or more Falls Far Below 0 or more Graded Assignment Name: SCI304B: Honors Chemistry | Unit 6 | Lesson 8: Unit Test Date: Graded Assignment Unit Test, Part 2 Answer the questions below. When you have finished, submit this assignment to your teacher by the due date for full credit. (8 points) 1. The diagram shows an electrochemical cell with copper (left) and zinc (right) strips. Score In your response, do the following: • Label all parts (1–9), including the solutions in each beaker and the connecting tube. • Label which cell is the cathode and which cell is the anode. Include the charge on each strip. • Show, or describe in detail, the flow of electrons. • Describe what type of electrochemical cell is pictured. Explain how the cell works. Include the oxidation and reduction half-reactions in your explanation. Answer: (8 points) Score © 2009 K12 Inc. All rights reserved. Copying or distributing without K12’s written consent is prohibited. Page 1 of 4 Graded Assignment SCI304B: Honors Chemistry | Unit 6 | Lesson 8: Unit Test 2. The diagram shows a Zn/MnO2-KOH alkaline dry cell. In your response, do the following: • Label all parts. • Label the cathode and the anode, including the charges on each. • Show the flow of electrons. • Explain how the cell works. Include the oxidation and reduction half-reactions in your explanation. Answer: (8 points) 3. Compare and contrast a dry cell with a voltaic cell by filling in the table. Score Answer: Dry Cells Voltaic Cells or Wet Cells Half-Cells Anode Cathode Electrolytes Oxidation Reaction Reduction Reaction © 2009 K12 Inc. All rights reserved. Copying or distributing without K12’s written consent is prohibited. Page 2 of 4 Graded Assignment SCI304B: Honors Chemistry | Unit 6 | Lesson 8: Unit Test Dry Cells Voltaic Cells or Wet Cells Bridge Relative Size (8 points) 4. The diagram shows an electrochemical cell with a gold strip (left) and aluminum glasses (right). Score In your response, do the following: • Label all parts, including the solution in the beaker. • Label the cathode and the anode, including the charge on each. • Show the flow of electrons. • Describe what type of electrochemical cell is pictured and what its use is. • Explain how the cell works. Include the oxidation and reduction half-reactions in your explanation. Answer: (8 points) 5. Crude copper has many metal impurities (for example, lead, zinc, nickel, and others) and does not conduct electricity well, so ultrapure copper is needed. Explain how you might use an electrochemical cell to purify copper. You must include a diagram of the electrochemical cell in your explanation. Score Answer: © 2009 K12 Inc. All rights reserved. Copying or distributing without K12’s written consent is prohibited. Page 3 of 4 Graded Assignment SCI304B: Honors Chemistry | Unit 6 | Lesson 8: Unit Test Your Score © 2009 K12 Inc. All rights reserved. Copying or distributing without K12’s written consent is prohibited. ___ of 40 Page 4 of 4 ...
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Tutor Answer

strongboss5
School: Boston College

Kindly see attached file with the answer to the different questions

Graded Assignment

Name:

SCI304B: Honors Chemistry | Unit 6 | Lesson 8: Unit Test

Date:

Graded Assignment
Unit Test, Part 2
Answer the questions below. When you have finished, submit this assignment to your teacher by the due date for
full credit.
(8 points)

1. The diagram shows an electrochemical cell with copper (left) and zinc (right) strips.

Score

In your response, do the following:


Label all parts (1–9), including the solutions in each beaker and the connecting tube.



Label which cell is the cathode and which cell is the anode. Include the charge on each strip.



Show, or describe in detail, the flow of electrons.



Describe what type of electrochemical cell is pictured. Explain how the cell works. Include the
oxidation and reduction half-reactions in your explanation.

Answer:
The parts of the electrochemical cell presented in the image are:
1. Copper electrode
2. Solution containing Cu2+ cations
3. Beaker. It represents the reduction compartment of the electrochemical cell
4. Light bulb
5. Beaker. It represents the oxidation compartment of the electrochemical cell
6. Solution containing Zn2+ cations

© 2009 K12 Inc. All rights reserved.
Copying or distributing without K12’s written consent is prohibited.

Page 1 of 7

Graded Assignment

SCI304B: Honors Chemistry | Unit 6 | Lesson 8: Unit Test

7. Electric wire that enables the flow of electrons from the Zn electrode (anode) to the Cu electrode
(cathode)
8. Zinc electrode
9. Connecting tube that serves to keep a constant charge by neutralizing the charges on each of the
solutions as the electrochemical process goes on. It is typically filled with a KNO3 ...

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Anonymous
Tutor went the extra mile to help me with this essay. Citations were a bit shaky but I appreciated how well he handled APA styles and how ok he was to change them even though I didnt specify. Got a B+ which is believable and acceptable.

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