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Acidification of Freshwater Streams and Lakes
Katy Olsen, Pierce College
Students research the acidification of freshwater streams and lakes, identify at least one of the sources, and determine how their daily activities contribute to the problem.

Bioregion Discipline: Chemistry
Bioregion Scale: Campus
Bioregion Topical Vocabulary: Water & Watersheds, Human Impact & Footprint

Bottled Versus Tap Water: What You Drink and Why
Marie Villarba, Seattle Central Community College
In the activity students learn about the properties of solutions, acidity and pH, electrolytes versus non-electrolytes, and solution concentration. Hopefully, this activity will also dispel common misconceptions about tap water and bottled beverages.

Bioregion Discipline: Environmental Studies, Chemistry
Bioregion Scale: Global, Campus
Bioregion Topical Vocabulary: Sustainability Concepts & Practices, Lifestyles & Consumption, Pollution & Waste, Food Systems & Agriculture

An Environmental Analysis of Lake Waughop
Karen Harding, Pierce College
Through an analysis of water quality in a nearby lake, students are introduced to basic chemical techniques such as titrations (both acid/base and oxidation/reduction), atomic absorption spectrometry, and uv/vis spectrometry

Bioregion Discipline: Environmental Studies, Chemistry
Bioregion Scale: Local Community/Watershed, Campus
Bioregion Topical Vocabulary: Water & Watersheds, Ecosystem Health

Alternative Deicers: An Application of Freezing Point Depression
Jennie Mayer and Daniel Mitchell, Bellevue Community College
Road deicers raise several environmental and cost concerns. In this activity students consider alternatives while investigating colligative properties.

Bioregion Discipline: Environmental Studies, Chemistry
Bioregion Scale: Local Community/Watershed, Campus
Bioregion Topical Vocabulary: Human Impact & Footprint, Social & Environmental Justice

Is The Water Safe for Aquatic Life?
Sue Habeck, Tacoma Community College
In this field activity students ponder sustainability issues such as point and non-point sources of pollution (including personal contributions), impacts of pollution, and potential mitigations.

Bioregion Discipline: Biology, Chemistry
Bioregion Scale: Campus, Local Community/Watershed
Bioregion Topical Vocabulary: Water & Watersheds, Human Impact & Footprint, Pollution & Waste, Ecosystem Health, Sustainability Concepts & Practices

Evergreen State College