CSI Milford


Day 1 Report:

Observations

  • A note in black folt point pen
  • Several Pictures of the penguin with an x through it
  • Several Pens

Background Information

Paper Chromotography: Analytical method technique of separating and indentifying mixture that are or can be coloured especially pigments.
Solution: way of resolving difficulty: a method of successfully dealing with a problem or difficulty.

Inferences or Hypothesis

Mr. Beil or Mr. Hood might have taken the penguin from Mrs. Laguna. Possibly any of the other teachers.

Tests Performed

Chromatograph Test:
Pens on Chromotagraphy paper and we put the paper in rubbing alcohol. The alcohol was put into a beaker. Biel, Laguna, Kirshman, Hood, Lancos, Rodes, and Cravener each gave us a pen and we put a dot onto the Chromotography paper.


Data

We have collected all of the pen data from all of the teachers.

Pictures

Mr. Hood (No Penguin)
Mr. Hood (No Penguin)
The Note
The Note



Conclusions

All of the Chromotography tests were completely different

Day 2 Report


Observations

  • Someone might have been experimenting on the penguin
  • Chromotography test of the mysterious note doesn't match any of the tests of the different tests.

Background Information

One of the teachers took the penguin but no test matches the mysterious note.

Inferences or Hypothesis

Someone in the main office might have taken the penguin because the penguin was found outside of the main office.

Tests Performed

Density Test:
Measured the graduated cylinder on a triple beam balence. We need to discover the density of several. We figured out the mass of the graduated cylinder and the liquid.

Data

The penguin was found outside the main office with a flask and a paper cut. The flask had a mysterious liquid inside. We put caution tape around it got plastic gloves and picked up the evidence.

Pictures

Penguin in the Hall
Penguin in the Hall
Mysterious Note
Mysterious Note
Teachers Pens
Teachers Pens

The Note, Pen Tests, and Mrs. Craveners matching paper
The Note, Pen Tests, and Mrs. Craveners matching paper

Conclusion

Nothing matches the mysterious note so we still don't know who took the penguin. The density of the mysterious liquid is 0.915

Day 3 Report



Observations

  • The whole experiment didn't change much
  • Only the Temperature really changed

Background Information

We found a mysterious Liquid and are testing that liquid to see what happens and if it is bad for the penguin.

Inferences or Hypothesis



Tests Performed

Heating Curve:
We filled a test tube with the mysterious liquid and put three chips into the test tube. We put the test tube over a rack and put an alcohol burner under neath. We lit the alcohol burner and took the temperature for every thirty seconds for 15 minutes.

Data

Time(min)
Temperature(C)
Observations
.5
22
Steaming
1
28

1.5
36

2
44
Bubbling
2.5
60
Rising and Lowering but more bubbles
3
77

3.5
79

4
80

4.5
81

5
81

5.5
82

6
83
Lots of condensation and the water has lowered
6.5
85

7
87

7.5
88
More and more bubbles
8
90

8.5
92

9
94

9.5
97

10
97
Condensation decreasing but even more bubbles
10.5
97

11
98

11.5
98

12
98

12.5
98

13
99

13.5
99

14
99

14.5
99

15
99

Briannas Heating Curve Mysterious Liquid Graph.jpg


Pictures

Liquid Bubbling and Water in Other Test Tube
Liquid Bubbling and Water in Other Test Tube
Heating Curve Lab Set Up
Heating Curve Lab Set Up

Conclusion

The Liquid can heat very mysteriously we are still unsure of what kind of liquid it might be but we know it can go up to high temperatures. We are also still unsure who took Mrs. Laguna's penguin.

Day 4 Report



Observations


Background Information

We are know heating the mysterious liquid and taking out three different liquids that came from the main mysterious.

Inferences or Hypothesis


Tests Performed

Fractional Distillation:
Using three test tubes labeled A, B, and C. We set up the lab exactly like the heating curve lab. Then we did the exact same procedures but changed the test tube every time it plateaued.

Data

Test Tube A- till 78 then switched to B at 81
Test Tube B- till 98-99 then switched to C
Test Tube C- its won't go any higher it has just stopped increasing and leveled out

Pictures

IMG_0560.JPG
Test Tube A B C

Conclusion

There are now three different liquids that are three similar but different colors. We still are very unsure of what will happen to the penguin if the penguin was exposed to this liquid.


Day 5 Report



Observations

The three liquids are different shads of yellow and one is clear.

Background Information

We know there are three different types of liquids created from one mysterious liquid.

Inferences or Hypothesis


Tests Performed

Flammability Test:
We dipped a wood split into one of the three liquids lit a match and watched to see if there was a flame. We did this same procedure for all three liquids.
Density Test:
We measured out how much a graduated cylinder weighted. Then we poured 10 mL of one liquid into the graduated cylinder and weighted that. We did that procedure for all three liquids. Then we subtracted the weight of the graduated cylinder minus the amount it weighted with the liquid in it. Then after we had all three measurements we then divided them by 10 to get the density.

Data

Fraction
Flammable
Density
A
yes
0.73
B
yes
0.89
C
no
0.97

Pictures

IMG_0557 (1).JPG

Conclusion

Two of the three liquids are flammable and liquid C isn't flammable. The densities are similar but we have found who we believe took the penguin.


Who Took The Penguin

We believe that Mrs. Cravener took the penguin. The pen and the paper matches the mysterious note so its settled Mrs. Cravener took Mrs. Laguna's precious penguin and tried to hide her evidence.