Graded Assignment SCI302/303/304A: Chemistry Unit 1 Laboratory: Paper Chromatography

Graded Assignment SCI302/303/304A: Chemistry | Unit 1 | Laboratory: Paper Chromatography

Graded Assignment

Lab Report

1. (5 points) Describe generally what happened to each spot of each type of ink. Which had the fewest pigments?

*Question 1 Part 1 - Answer for, “Describe generally what happened to each spot of each type of ink.” (Complete the sentence below using as many or as few words as you need): (4 points)

*Hint: When we say 'generally', it means that we're supposed to write a statement that applies to everything. So to answer this, we have to say what happened to all the ink spots. You should have noticed two things that happened to every ink spot and I'll give you 2 points for each one. Also, the answer is in the walkthrough.

In general, each ink spot ______(2 points) some distance and ______(2 points) into different colors.

*Question 1 Part 2 Answer for, “Which had the fewest pigments?” (fill in the blank below):

The ______colored ink had the fewest pigments. (1 point)

(5 points)

2. List the inks in order of how far they traveled.

Answer: .

· Ink that traveled the farthest: ______(1 point)

· Ink that traveled the second-farthest: ______(1 point)

· Ink that traveled the third-farthest: ______(1 point)

· Did you notice that I give away part of the answer to question #1 in the walkthrough? (yes/no) ______(2 points)

(5 points)

3. What observations would lead you to believe that a colored ink is actually a mixture?

Answer: (complete the sentence below for 4 points)

(4 points) I would believe that a colored ink is a mixture if I see.....

(1 point) Bonus: Did you notice that I pretty much give away the answer to this question in the walkthrough? (yes/no) ______.

(5 points)

4. Which pen was used to write the recipe? Who was the poisoner?

Answer: (Continue the sentences below to create a complete answer.)

· (2 points) The recipe was written with the ____ colored pen.

· (3 points) The poisoner was most likely ______.

Score Template. Please do not edit below.

Note: You may correct and re-submit this lab for a higher score. Please please please please use the Unit 1 Lab Walkthrough that I created. If you have any questions about how to do this lab, please ask them in the Unit 1 Lab Question Forum.

Score Breakdown:

Question 1: + (out of 5)

Question 2: + (out of 5)

Question 3: + (out of 5)

Question 4: + (out of 5)

Retake policy and how to get help:

You may correct and re-submit this lab for a higher score. Please please please please use the Unit 1 Lab Walkthrough that I created. If you have any questions about how to do this lab, please ask them in the Unit 1 Lab Question Forum.

Your Score / ___ of 20

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