|
OBJECTIVES:
Students learn about chromatography, a process used
to separate mixtures.
Chromatography is used by crime laboratories to identify
clues such as blood, ink, or other substances found at a crime scene.
Chromatograms of these clues are compared
against chromatograms of known substances for identification.
Students will perform a series of 12 chromatography tests and
compare their results against chromatogram charts of known substances.
NATIONAL SCIENCE STANDARDS:
Physical Science:
Properties Of Objects And Materials (K-4)
Properties And Changes Of Properties In Matter (5-8)
Structure And Properties Of Matter(9-12)
Science As Inquiry:
Abilities Necessary To Do Scientific Inquiry
Understanding About Scientific Inquiry
Science and Technology:
Understanding About Science and Technology
STANDARDS FOR TECHNOLOGY LITERACY:
The Nature of Technology:
Students will develop an understanding of the characteristics
and scope of technology.
Students will develop an understanding of the core concepts of
technology.
Students will develop an understanding of the relationships
among technologies and the connections
between technology and other fields of study.
Design:
Students will develop an understanding of the role of
troubleshooting, research and development, invention and innovation, and
experimentation in problem solving.
The Designed World:
Students will develop an understanding of and be able to select and
use medical technologies.
Students will develop an understanding of and be able to select and
use agricultural and related biotechnologies.
| |
LECTURE AND PREPARATION TIME:
30 minutes
LESSON TIME:
30 minutes
WORDS TO KNOW:
- chromatogram
- chromatography
- medium
- porous
- solvent
- test substance
SPECIAL NOTES:
Although the science concepts and vocabulary are
intended for middle school students,
younger and older students may enjoy this activity.
The instructor may wish to develop their own chromatogram chart
using the actual color markers provided for the students.
|
