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Unit 7.3 The Chemistry in Earth’s
Water
This unit shows a class learning important methods in chemistry
while conducting their own chemical analysis of water as
part of an environmental science unit. Students engage in
scientific measurements of water quality at a nearby lake.
Video program cues: 16:20-29:35
Measuring water samples
"We have a catchment lake which
was built fairly close to school, we walk the kids there
and take some water samples also. We do lots of stuff about
chemical analysis using this lake. We are teaching filtration
techniques using the dirty water samples; it could be calculating
percent organic vs. percent inorganic in samples, and salt
sediments."
Caryn Galatis
Thomas Edison High School, Virginia
Link
Reading
Sinniah, K., Piers, K. (2001)' Ion Chromatography: Analysis
of Ions in Pond Waters, 'Journal of Chemical Education,
Vol. 78, No. 3, pp: 358-342.
Analysis of water laboratory
Veatta Berry teaches about the analysis of water quality
and about presenting results.
Activity
Links
- The GLOBE
program is a worldwide authentic science program in
which students make measurements–water, land, etc–in
their own locale and report the data on the web. Enter
the GLOBE site and click on "Teacher’s Manual"
on left for activities.
- Activities related to the chemistry of solubility
and water quality.
Readings
Kelter, P.B., Grundman, J., Hage, D.S., Carr, J.D., Mauricio,
C. (1997)' A Discussion about Pollution in the United States
and Mexico; with High School Laboratory Activities for the
Analysis of Lead, Atrazine, and Nitrate, 'Journal of
Chemical Education, Vol. 74, No. 12, pp: 1413-1421.
Randall, Jack (1997)' Integrating High School Chemistry
with Environmental Studies and Research, 1997, 'Journal
of Chemical Education, Vol. 74, pp: 1409.
| Proceed
to Unit 7.4 |
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