Katie+CSI

toc =__CSI Milford__=

=Day 1 Report:=

Observations
Many teachers have black felt tip pens, many of the pens tested are separating into black, blue, and purple.Some teachers have signs hung up in their rooms, with penguins crossed out....

Background Information
We found a ransom note in the spot where Mr. Penguin was. We collected many pens related to the ones on te note from suspected teachers. When we retrieved a pen from Mr. Beil he said he started the anti penguin society. He is a primary suspect! We can use paper Chromotagraphy to determine the pen. Paper chromatography is an analytical method technique for separating and identifying mixtures that are or can be coloured, especially pigments. This can also be used in secondary or primary colours in ink experiments.

Inferences or Hypothesis
We can try paper chromtography to find who wrote the ransom note. We predict that each one will turn blue in the chromotagraphy test besides one, and that one will be the pen that wrote the ransome note

Tests Performed
Chromotography test

Data
Down below are the colors that each pen seperated into Beil- blue, green, black Laguna- black, purple Lancos- blue, purple Rhoades- blue, purple Cravener- blue,black, purple, green, brown Majority of the pens are separating into different colors, some aren't even beginning to split at all.

Pictures
[|Ransom Note]

Conclusions
Mrs. Cravener and Mr. Lancos's pen are the closest match to the ransom note, They are my number one suspects so far. =Day 2 Report:=

Observations
The liquid is clear, smells like vinegar or nail polish remover

Background Information
This liquid was found next to the barely living penguin. We think this may be the liquid that may have harmed him..

Inferences or Hypothesis
We can test the Ransom note and see what pen it matches. Then we can match it to he guilty teacher... Mysterious liquid May be liquid benzene because it has the same density as .88

Tests Performed
Density Test

Data
Graduated cylinder with water- 26.3 g - __Graduated Cylinder- 17.5 g__ Total 8.8 g Volume .88 g

Pictures
[|Ransom Note]

Conclusions
the liquid is most likely liquid benzene because it has the same density as it. =Day 3 Report:=

Observations
.5-1.5 mins - Still and clear 2 mins - Bubbles appear 2.5 mins - Boiling begins 3-3.5 mins - Temp increases rapidly 4-4.5 mins - Temp starts to settle 5 mins - Temp is slowly increasing 5.5 mins - Temp barely increases

Background Information
Today we collected another note and pen from Mrs. Cravener that matches the type of paper and chromatography test that was used to right the ransom note...

Inferences or Hypothesis
By using the heating curve test, we can determine what the mysterious liquid is.... My guess is liquid benzene because it matches a density of .88

Tests Performed
Heating curve lab

Data
(in lab notebook)

Conclusions
The heating curve is consistent at 79 and 99 degrees Celsius. I have come to a conclusion that the mysterious liquid is ethanol! =Day 4 Report:=

Observations
Our data showed a few flats or consistencies in temperature.

Background Information
We tested the density of the liquid to see what substance it is.

Inferences or Hypothesis
The liquid is ethanol because it has the same boiling point as ethanol

Tests Performed
Fractional Distillation Part 1

Pictures
n/a

Conclusions
by using fractional distillation we were able to get the liquid as its pure substance

=Day 5 Report:=

Observations
2-3 mins - started to bubble 3.5 mins - condensation in beaker 4 mins - ice in beaker fully melted 4.5-5 mins- rapid bubbling 5-5.5 mins- rapid bubbling. low rise in temperature

Background Information
the liquid is ethanol

Inferences or Hypothesis
Mrs Cravener is the criminal!

Tests Performed
Flammability and Density tests of evaporated liquid from heating curve lab

Data
2-3 mins - started to bubble 3.5 mins - condensation in beaker 4 mins - ice in beaker fully melted 4.5-5 mins- rapid bubbling 5-5.5 mins- rapid bubbling. low rise in temperature

Pictures
n/a

Conclusions
Mrs. Cravener is the murderer!

= = =Who done it= after following a case of attempted murder of Mrs. Laguna's penguin, I've come to the conclusion that the murderer is Mrs. Cravener. In the paper chromatography test her pen matched the ink on the ransom note, and the same paper used for the note was found in her room. I knew from day one that she was the nightmare next-door trying to kill the penguin. She was always jealous and wanted Mrs. Laguna's tickets...