DATE: 9/28/2012
DLT: I can demonstrate my knowledge about matter.
B/R: 1. List 3 ways to separate a mixture.
2.Which of the following is a property of a mixture?
a. Has varying properties
b. Has a fixed composition
c. Contains only pure substances
d. Both a and b
3.You find a substance and it CANNOT be broken down
into simpler substances, it is
a. A compound
b. An element
c. Made of one kind of atom
d. Both c and b
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X________________X________________X______________X_____________X____________
Candy
green
blue
yellow
red
A student performs a chromatography experiment to identify the
dye(s) present in a sample of candy. The student compares the
results of this sample to the results obtained for pure samples of
green, blue, yellow, and red dyes. Which statement best describes
the dye content of the candy sample.
A. It contains only blue dye.
B. It contains only green dye.
C. It contains both blue and yellow dyes
D. It contains both green and yellow dyes.
2) A chemistry student finds a beaker in the laboratory
containing a mixture of copper(II) sulfate and sand. The
student add water to the beaker, and the solution turns blue.
What technique would best separate the blue solutions from
the sand?
a. Chromatography
b. distillation
c. evaporation
d. filtration
chromatography- process of separating mixtures due
to the different rates of solutes separating.
1) Other means or uses of chromatography.
Bomb materials, leaves
Flavors
Scents
Pollutants
Drugs in urine
solute vs. solvent
Easter egg chromatography
2) What is black?
3) Can you think of a reason to use chromatography
in forensic science?
4) How is it used as a forensic tool?
5) How does chromatography work?
6) Other means or uses of chromatography.
Bomb materials, leaves
Flavors
Scents
Pollutants
Drugs in urine
solute vs. solvent
Easter egg chromatography