Science Olympiad Boyceville Invitational Crime Busters : The Missing Million Dollars Saturday, December 3, 2016

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1 The Scenario: Science Olympiad Boyceville Invitational Crime Busters : The Missing Million Dollars Saturday, December 3, 2016 This morning police received a phone call from Central High School reporting that the school s recently acquired $1,000,000 donation was missing. The donation was made by Rich Allison, the wealthiest alumnus of Central High School and was given to construct a new science wing for the high school. The police arrived promptly and started to work. They were able to collect fingerprints from the area where the money was being held in a safe and found a black marker and note that said My Money Now! A chromatogram was made of the ink. This chromatogram was developed in rubbing alcohol for 10 minutes. Eight powders (Samples A H), three liquids (Samples I, J, K), three metals (Samples L, M, N), and six polymers (Samples O - T)) were also collected at the scene. The safe holding the money was located in the weight room. In addition, a DNA sample was taken at the scene with the results below, but this scene is in the main office of the school with easy access. Also, a whorl fingerprint was found at the scene. In addition, a horse hair was found at the scene. Six potential suspects have been identified: Principal Jones: Principal Jones was not happy with the current science teacher and wanted the money to go towards building a new classroom for the social studies department. Secretary Joe: Secretary Joe was dealing with financial troubles and needed money to pay the rent. Coach Hardy: Coach was upset that the money was not being used to build a new weight room for the athletes at Central High School. Athletic Casey: Athletic Casey was also upset that the money was not being used to build a new weight room for athletes. She thinks that the "smart kids" get everything nice while the athletes are left behind. Smart Bob: Bob was excited that the money was donated for a new science wing of the high school, but he did not like the design that was proposed. Bob wanted the money to build his own science classroom at his house. Rich Allison: The money donated was left in a will from Allison's wealthy husband Jerry. Allison was mad that the money was not left for her, as she was his loving wife for 48 years. She was very jealous of the science department at the school. The powders, liquids, and metals have been provided to you. Police fingerprinted and interviewed each of the suspects. Your task, detectives, is to analyze the substances found at the crime scene, complete a chromatogram on the black marker, and determine which if any of the samples found at the scene belong to which of the suspects and determine who is most likely to have taken the laser. You have 50 minutes. Good luck.

2 Name: Principal Jones Age: 55 Blood: O Pet: Rabbit Eyes: Brown Pen: D SUSPECT INTERVIEW SHEET Fingerprint DNA Additional info: Trying to avoid the cold that Secretary Joe has been fighting and has been taking lots of vitamin C. Likes to collect aluminum soda cans and drink pop from bottles. Name: Secretary Joe Age: 32 Blood: B- Pet: Bat Eyes: Hazel Pen: D Additional info: Has been dealing with a cold lately and likes to use alka- seltzer. Was working yesterday to replace the PVC pipes in his basement and used a hack saw to cut the pipes, leaving bits of plastic behind. Likes to collect old tin cans. Putting new siding on house. Name: Coach Hardy Age: 48 Blood: B+ Pet: Dog Eyes: Green Pen: C Additional info: Has been very busy cleaning and disinfecting the weight room for the past couple of days. He has also been putting up new sheetrock walls in the weight room at school. Likes to collect old copper pipes and grind them down. Name: Athletic Casey Age: 17 Blood: A- Pet: Cat Eyes: Blue Pen: B Additional Info: Likes to volunteer in the garden center at her Grandpa s nursing home and also likes to spend time at the beach. Likes to collect old iron nails stored in milk jugs. Name: Smart Bob Age: 17 Blood: O Pet: None Eyes: Brown Pen: B Additional Info: Has heartburn often and is currently working on an acid/base titration project for Chemistry. He was helping Principal Jones and Joe with a fireworks demonstration for town recently. He has a plastic bottle collection. Name: Rich Allison Age: 72 Blood: AB+ Pet: Horse Eyes: Green Pen: A Additional Info: Likes to bake often. Spent the previous day making pickles and Jello Molds and likes to eat vinegar potato chips. Likes to collect aluminum soda cans to recycle and collect the profits. Always eats on styrofoam plates and wears contact lenses.

3 Part A: Qualitative Analysis (50%) You have 14 samples (labeled A- N) to identify. Provided materials include: Iodine reagent, 1 M HCl, waste beaker, Chromatography Paper and a wash bottle with distilled water. Place all wastes into the waste beakers provided. There are also several questions to answer regarding the substances and their properties. NOTE: When answering the questions, be sure to consider all the possible substances, not just those identified. Part B: Polymers and Fibers (10%) You have 6 polymers (O, P, Q, R, S, T) to identify. Substance Density (g/ml) Corn Oil % Isopropyl Alcohol Distilled Water % NaCl % NaCl 1.19 Saturated NaCl 1.25 Additionally: Sample O has the second highest density of any of the possible plastics Sample P burns with a green flame Sample Q sinks in distilled water but floats in 10% NaCl Sample R sinks in the 10% NaCl but floats in the 25% NaCl Sample S is nearly buoyantly neutral in 46% Isopropyl Alcohol Sample T is more dense than PP but still floats in 46% Isopropyl Alcohol Part C: Chromatography/Spectroscopy (5%) Pen A Pen B Pen C Pen D

4 Part D: Crime Scene Physical Evidence (10%) DNA Found at the Scene Part E: Analysis of the Crime (25%) Write an analysis of the crime that explains which pieces of evidence implicate the suspect you selected. Also provide reasons why the other suspects were not chosen. You must limit your analysis to the one side of the answer sheet only be concise!

5 WI Boyceville Invitational 2016 Saturday, Dec 3, 2016 Crime Busters Event Answer Sheet Team Name: Team Number: Names of Participants: Part A: Qualitative Analysis (50%) 90 Total Points Point value Answer Question 1. 4 Identity of Sample A Which suspect(s), if any, does this piece of evidence implicate? 4. 4 Identity of Sample B Which suspect(s), if any, does this piece of evidence implicate? 7. 4 Identity of Sample C Which suspect(s), if any, does this piece of evidence implicate? Identity of Sample D Which suspect(s), if any, does this piece of evidence implicate? Identity of Sample E Identity of Sample F

6 19. 4 Identity of Sample G Identity of Sample H Identity of Sample I Identity of Sample J Identity of Sample K Identity of Sample L Identity of Sample M Identity of Sample N

7 Part B: Polymers and Fibers (10%) 18 Total Points Point value Answer Question Identity of Polymer O What type of polymerization is used to make this polymer? Identity of Polymer P Identity of Polymer Q Identity of Polymer R Identity of Polymer S Identity of Polymer T Which polymer is used in peanut butter jars? What polymer is used in produce bags? Which polymer is used in water pipes? Which polymer is used in bottle caps?

8 Part C: Chromatography/Spectroscopy (5%) 9 Total Points Attach your completed chromatograph above Which suspect(s) does this evidence implicate? Part D: Crime Scene Physical Evidence (10%) 18 Total Points Point value Answer Question Which suspect's DNA was found at the scene? Which suspects have arches in their fingerprints? Which suspects have loops in their fingerprints? Which suspects have whorls in their fingerprints? Which suspect(s) are implicated by the fingerprint evidence? Which suspect(s) are not implicated by the fingerprint evidence?

9 Part E: Analysis of the Crime Scene (25%) 45 Total Points Write an analysis of the crime that explains which pieces of evidence implicate the suspect you selected. Also provide reasons why the other suspects were not chosen. You must limit your analysis to this side of the answer sheet only be concise! Start by filling out the table below. Mark a check mark if the evidence implicates the suspect. Don't forget to write the analysis after the table! Suspect Principal Jones Secretary Joe Coach Hardy Athletic Casey Smart Bob Rich Allison A B C D E F G H I J K L M N O P Q R S T DN A FP HR

10 The Scenario: Science Olympiad Boyceville Invitational Crime Busters : The Missing Million Dollars Saturday, December 3, 2016 This morning police received a phone call from Central High School reporting that the school s recently acquired $1,000,000 donation was missing. The donation was made by Rich Allison, the wealthiest alumnus of Central High School and was given to construct a new science wing for the high school. The police arrived promptly and started to work. They were able to collect fingerprints from the area where the money was being held in a safe and found a black marker and note that said My Money Now! A chromatogram was made of the ink. This chromatogram was developed in rubbing alcohol for 10 minutes. Eight powders (Samples A H), three liquids (Samples I, J, K), three metals (Samples L, M, N), and six polymers (Samples O - T)) were also collected at the scene. The safe holding the money was located in the weight room. In addition, a DNA sample was taken at the scene with the results below, but this scene is in the main office of the school with easy access. Also, a whorl fingerprint was found at the scene. In addition, a horse hair was found at the scene. Six potential suspects have been identified: Principal Jones: Principal Jones was not happy with the current science teacher and wanted the money to go towards building a new classroom for the social studies department. Secretary Joe: Secretary Joe was dealing with financial troubles and needed money to pay the rent. Coach Hardy: Coach was upset that the money was not being used to build a new weight room for the athletes at Central High School. Athletic Casey: Athletic Casey was also upset that the money was not being used to build a new weight room for athletes. She thinks that the "smart kids" get everything nice while the athletes are left behind. Smart Bob: Bob was excited that the money was donated for a new science wing of the high school, but he did not like the design that was proposed. Bob wanted the money to build his own science classroom at his house. Rich Allison: The money donated was left in a will from Allison's wealthy husband Jerry. Allison was mad that the money was not left for her, as she was his loving wife for 48 years. She was very jealous of the science department at the school. The powders, liquids, and metals have been provided to you. Police fingerprinted and interviewed each of the suspects. Your task, detectives, is to analyze the substances found at the crime scene, complete a chromatogram on the black marker, and determine which if any of the samples found at the scene belong to which of the suspects and determine who is most likely to have taken the laser. You have 50 minutes. Good luck.

11 Name: Principal Jones Age: 55 Blood: O Pet: Rabbit Eyes: Brown Pen: D SUSPECT INTERVIEW SHEET Fingerprint DNA Additional info: Trying to avoid the cold that Secretary Joe has been fighting and has been taking lots of vitamin C. Likes to collect aluminum soda cans and drink pop from bottles. Name: Secretary Joe Age: 32 Blood: B- Pet: Bat Eyes: Hazel Pen: D Additional info: Has been dealing with a cold lately and likes to use alka- seltzer. Was working yesterday to replace the PVC pipes in his basement and used a hack saw to cut the pipes, leaving bits of plastic behind. Likes to collect old tin cans. Putting new siding on house. Name: Coach Hardy Age: 48 Blood: B+ Pet: Dog Eyes: Green Pen: C Additional info: Has been very busy cleaning and disinfecting the weight room for the past couple of days. He has also been putting up new sheetrock walls in the weight room at school. Likes to collect old copper pipes and grind them down. Name: Athletic Casey Age: 17 Blood: A- Pet: Cat Eyes: Blue Pen: B Additional Info: Likes to volunteer in the garden center at her Grandpa s nursing home and also likes to spend time at the beach. Likes to collect old iron nails stored in milk jugs. Name: Smart Bob Age: 17 Blood: O Pet: None Eyes: Brown Pen: B Additional Info: Has heartburn often and is currently working on an acid/base titration project for Chemistry. He was helping Principal Jones and Joe with a fireworks demonstration for town recently. He has a plastic bottle collection. Name: Rich Allison Age: 72 Blood: AB+ Pet: Horse Eyes: Green Pen: A Additional Info: Likes to bake often. Spent the previous day making pickles and Jello Molds and likes to eat vinegar potato chips. Likes to collect aluminum soda cans to recycle and collect the profits. Always eats on styrofoam plates and wears contact lenses.

12 Part A: Qualitative Analysis (50%) You have 14 samples (labeled A- N) to identify. Provided materials include: Iodine reagent, 1 M HCl, waste beaker, Chromatography Paper and a wash bottle with distilled water. Place all wastes into the waste beakers provided. There are also several questions to answer regarding the substances and their properties. NOTE: When answering the questions, be sure to consider all the possible substances, not just those identified. Part B: Polymers and Fibers (10%) You have 6 polymers (O, P, Q, R, S, T) to identify. Substance Density (g/ml) Corn Oil % Isopropyl Alcohol Distilled Water % NaCl % NaCl 1.19 Saturated NaCl 1.25 Additionally: Sample O has the second highest density of any of the possible plastics Sample P burns with a green flame Sample Q sinks in distilled water but floats in 10% NaCl Sample R sinks in the 10% NaCl but floats in the 25% NaCl Sample S is nearly buoyantly neutral in 46% Isopropyl Alcohol Sample T is more dense than PP but still floats in 46% Isopropyl Alcohol Part C: Chromatography/Spectroscopy (5%) Pen A Pen B Pen C Pen D

13 Part D: Crime Scene Physical Evidence (10%) DNA Found at the Scene Part E: Analysis of the Crime (25%) Write an analysis of the crime that explains which pieces of evidence implicate the suspect you selected. Also provide reasons why the other suspects were not chosen. You must limit your analysis to the one side of the answer sheet only be concise!

14 WI Boyceville Invitational 2016 Saturday, Dec 3, 2016 Crime Busters Event Answer Sheet Team Name: KEY Team Number: Names of Participants: Part A: Qualitative Analysis (50%) 90 Total Points Point value 1. 4 Answer Sand Identity of Sample A Question No reactivity with anything Athletic Casey Vitamin C Low ph Principal Jones Alka Seltzer Reactivity with Water Secretary Joe Calcium Sulfate Which suspect(s), if any, does this piece of evidence implicate? Identity of Sample B Which suspect(s), if any, does this piece of evidence implicate? Identity of Sample C Which suspect(s), if any, does this piece of evidence implicate? Identity of Sample D Secretary Joe Gelatin Reactivity with Water to form Gel Rich Allison Yeast Odor, Visible Appearance Rich Allison Which suspect(s), if any, does this piece of evidence implicate? Identity of Sample E Identity of Sample F

15 Flour Positive Iodine Test, Appearance Rich Allison Sodium Acetate Odor, Appearance Rich Allison Vinegar Odor, ph Rich Allison Ammonia Odor, ph Coach Hardy Rubbing Alcohol Odor Coach Hardy Aluminum Lack of Reactivity Rich Allison, Principal Jones Iron Magnetic Athletic Casey Magnesium Reactivity with Water and HCl Smart Bob, Principal Jones, Secretary Joe Identity of Sample G Identity of Sample H Identity of Sample I Identity of Sample J Identity of Sample K Identity of Sample L Identity of Sample M Identity of Sample N

16 Part B: Polymers and Fibers (10%) 18 Total Points Point value Answer PETE Identity of Polymer O Question Condensation Principal Jones, Smart Bob PVC Secretary Joe PS Rich Allison PMMA Rich Allison HDPE Athletic Casey LDPE Secretary Joe PETE PE PVC PP What type of polymerization is used to make this polymer? Identity of Polymer P Identity of Polymer Q Identity of Polymer R Identity of Polymer S Identity of Polymer T Which polymer is used in peanut butter jars? What polymer is used in produce bags? Which polymer is used in water pipes? Which polymer is used in bottle caps?

17 Part C: Chromatography/Spectroscopy (5%) 9 Total Points attached Rich Allison Attach your completed chromatograph above. Which suspect(s) does this evidence implicate? Part D: Crime Scene Physical Evidence (10%) 18 Total Points Point value Answer Rich Allison Coach Hardy Smart Bob, Athletic Casey Rich Allison, Principal Jones, Secretary Joe Rich Allison, Principal Jones, Secretary Joe Smart Bob, Coach Hardy, Athletic Casey Question Which suspect's DNA was found at the scene? Which suspects have arches in their fingerprints? Which suspects have loops in their fingerprints? Which suspects have whorls in their fingerprints? Which suspect(s) are implicated by the fingerprint evidence? Which suspect(s) are not implicated by the fingerprint evidence?

18 Part E: Analysis of the Crime Scene (25%) 45 Total Points Write an analysis of the crime that explains which pieces of evidence implicate the suspect you selected. Also provide reasons why the other suspects were not chosen. You must limit your analysis to this side of the answer sheet only be concise! Start by filling out the table below. Mark a check mark if the evidence implicates the suspect. Don't forget to write the analysis after the table! Suspect Principal Jones Secretary Joe Coach Hardy Athletic Casey Smart Bob Rich Allison A B C D E F G H I J K L M N O P Q R S T DNA FP HR CH X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X

Science Olympiad Boyceville Invitational Forensics : The Missing Million Dollars Saturday, December 3, 2016

The Scenario: Science Olympiad Boyceville Invitational Forensics : The Missing Million Dollars Saturday, December 3, 2016 This morning police received a phone call from Central High School reporting that