Becky+CSI

toc =__CSI Milford__=

=Day 1 Report:=

Observations

 * black marker ink
 * wants tickets
 * left glasses behind
 * white paper
 * thick ink

Background Information

 * a method for testing the purity of compounds and identifying substances
 * relatively quick
 * requires small quantities of material
 * components of the sample will separate readily according to how strong they absorb versus how readily they absorb in the mobile phase
 * stationary phase- high quality filter paper
 * moving phase- developing solution that travels up the stationary phase, and carries samples with it
 * a technique used to separate and identify mixtures that are or can be colored
 * received a black pen from kirschman, cravener, beil, hood, laguna, rhodes, and lancos

[|Instructions]

Mixture- a substance made by mixing other substances together Solution- a means of solving a problem or dealing with a difficult situation Paper Chromatography- a form of partition in which the moving phase is a liquid and the stationary phase is paper Fractional distillation- the separation of a liquid into fractions differing in boiling point by means of distillation

Materials:
 * chromatography paper
 * 250 mL beaker
 * graduated cylinder
 * pen samples
 * rubbing alcohol
 * ruler
 * pencil

Inferences or Hypothesis
My hypothesis is that we can figure out who did it by analyzing the identity of the marker each teacher gave us. I think it was Mr. Beil because he had a black marker in his shirt pocket, similar to the one that was used on the note, and he had an anti penguin sign in his room.

Tests Performed
Paper Chromatography-
 * **Cravener** is a solution(has blue, orange, and black)
 * **Kirschman** stayed black
 * **Rhodes** is a solution(blue, pink, and black)
 * **Laguna** is a solution(black and blue)
 * **Hood** is a solution(black and blue)
 * **Lancos** is a solution(black, purple, and blue)
 * **Beil** is a solution(black, green, and blue)

Observations

 * a big, cardboard penguin was found on the ground by the office
 * next to a beaker of clear liquid and a cup

Test Performed

 * First, we found the mass of an empty graduated cylinder
 * Then, we filled the graduated cylinder with the clear liquid 15 mL
 * Next, we weighed the full graduated cylinder
 * After that, we divided the mass and the volume to get the density

Data
Mass of empty graduated cylinder- 17.3 grams Mass of full graduated cylinder- 30.4 grams Density- 0.56 grams per milliliter

Observations

 * the longer the liquid boiled, the more the temperature increased
 * once the

Test Performed

 * First, we set up the lab the way it should be set up
 * Next, we poured 10 mL of the liquid, and placed 3 boiling chips inside a test tube
 * Then, we put the test tube in the test tube clamp, and filled a beaker with ice cold water
 * After that, we put a different test tube into the beaker full of water, and attached the black tubing from the test tube on the clamp to the test tube inside the beaker
 * Then, we lit the alcohol burner with a match and recorded the temperature of the test tube every 30 seconds

Observations

 * the marker used to write the note, was the same marker used to write the note on cravener's whiteboard

Data

 * Time(Minutes) || Temperature(Degrees Celsius) ||
 * 0:30 || 23 ||
 * 1:00 || 25 ||
 * 1:30 || 28 ||
 * 2:00 || 32 ||
 * 2:30 || 35 ||
 * 3:00 || 37 ||
 * 3:30 || 40 ||
 * 4:00 || 43 ||
 * 4:30 || 47 ||
 * 5:00 || 52 ||
 * 5:30 || 57 ||
 * 6:00 || 65 ||
 * 6:30 || 72 ||
 * 7:00 || 75 ||
 * 7:30 || 78 ||
 * 8:00 || 78 ||
 * 8:30 || 78 ||
 * 9:00 || 78 ||
 * 9:30 || 78 ||
 * 10:00 || 78 ||
 * 10:30 || 78 ||
 * 11:00 || 78 ||
 * 11:30 || 78 ||
 * 12:00 || 78 ||
 * 12:30 || 78 ||
 * 13:00 || 78 ||
 * 13:30 || 79 ||
 * 14:00 || 79 ||
 * 14:30 || 79 ||
 * 15:00 || 79 ||
 * 15:30 || 79 ||
 * 16:00 || 79 ||