Richie+CSI

toc =__CSI Milford__=

=Day 1 Report:=

Observations
Mrs. Laguna seemed suspicious of taking the penguin, she seemed a little uneasy when talking about the penguin and how would anyone else know about the tickets? What would they use them for? All the pens we did the test on were coloured with a purple, pink and blue colour

Background Information
Paper chromatography is the analytical method and technique for separating and identifying mixtures that are or can be coloured, especially pigments. This can be used in secondary or primary colours in ink experiments.

Inferences or Hypothesis
I think that Mrs. Laguna took the pens she seemed uneasy when talking about it. Check observations for more.

Tests Performed
We took the paper chromatography test.

Data
Hood~ Blue Kirschmen~ No change in colour Beil~ Blue Lancos~ Purple Laguna~ Black Cravener~ Orange Rhodes~ Neon Blue

Pictures


Conclusions
The thief of the penguin used a black pen, we tested our pens that we got for evidence so we could possibly match up the tests with another person.

= Day 2 Report: =

Observations:
Some pens have blue an purple or some green, but overall they are all different so we will be able to identify the thief easier. While we were testing the pens the colors rose as the liquid rose up the paper.

Background Information:
Mr. Hood has a picture of a penguin with a huge red X over it showing that he could be the thief But another suspect has the same sign of no penguins, that suspect is Mr. Beil. That information could be key but Mr. Lancos keeps coming in to see if we found who it was and acts suspicious when ever he comes in.

Inferences or Hypothesis
I believe that the thief of the penguin could be Mr. Lancos based on our observations.

Tests Performed
We used the paper chromatography test and tested that suspicious note that was left in the classroom when the penguin went missing.

Data
Hood~ No Match Kirschmen~ No match Beil~ No Match Lancos~ Somewhat Matched Laguna~ No Match Cravener~ No Match

Pictures
 

Conclusions
The note that was left for our class was tested and does not really match up with any ones pen, the only one that it is some what similar was Mr. Lancos' pen.

= Day 3 Report: =

Observations:
The heating curve test was done and the liquid began to bubble quite a lot, it also started to have condensation appear on the side of the test tube.

Background Information:
We found another pen from Mrs. Cravener which we did chromatography test on and the colours of the test matched with the ransom notes chromatography test colours.

Inferences or Hypothesis
I believe because of the evidence that we have, that Mrs. Cravener stole the penguin.

Tests Performed
The heating curve lab test

Data
The heating curve test that we did had two times when the temperature leveled off for a minute or two.

Pictures


Conclusions
My conclusion is that Mrs. Cravener stole the pen. = = = Graph~ =

= Day 4 Report: =

Observations
When the substances liquid comes through the tubing and ends up in the test tube, the end substance looks like it has a foggy yellow colour.

Background Information
We know that the lab will take a little bit of time because of the substance in the test tube that is being heated.

Inferences or Hypothesis
I predict that the first two test tubes will finish very fast but the last test tube will be very slow, all the times and temperatures will match up to our original test.

Tests Performed
We performed the fractional distillation lab to get fractions (liquid from the test tube that had a change of state)

Data
A finished fastest because it had an easier rise of temperature B finished the slowest until we had to change the test tubes C did not change we just let the liquid go into the test tube.

Pictures


Conclusions
My conclusion is that A was a fast rise, B was a very slow rise, and C did not rise it stayed the same. Overall we tested to try to find out what substance the thief hurt the penguin with. = Day 5 Report: =

Observations
The splints when lit with a flame would either catch or not catch, when we lit the flames we found that only one was flammable and when it caught fire it was a blue flame. The other two liquids did not catch fire.

Background Information
The liquids we have that we call fractions we got from heating a test tube with a substance/liquid in it and when it was heated the liquid would release bubbles which would travel through tubing and will go into a small test tube that will eventually be filled with some of that liquid.

Inferences or Hypothesis
I predict that only one of the liquids will be flammable but the other two liquids will not be flammable.

Tests Performed
We performed the flammability test to find if our fractions (liquids that had a change of state) were flammable.

Data
Fraction Densities~ Fraction A- o.83 g/ml Fraction B- 0.98 g/ml Fraction C- 1.06 g/ml

Conclusions
My conclusion for today's lab is that only one liquid was flammable and the other two were not flammable.

=Who Done It?= In our CSI investigation about our good friend the penguin we found great evidence, there were pictures, chemicals, and pens that prime suspects had. We narrowed it down to about 3 people after the paper chromatography test. We matched colours up to Mrs. Cravener, Mr. Lancos, and Mrs. Rhodes. After a long chromatography test we found our penguin in the lobby of the school and he had a liquid substance next to him that made the penguin pass out. The liquid we found was flammable and was not harmful to the penguin. After investigating who had the substance and the pen we came to a conclusion that Mrs. Cravener stole the penguin.