Lesson 3: Investigating Pollutants
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What might be in the water that could have killed the animals? What can we observe about each of those dangerous materials?
Some properties that can be tested when materials are mixed with water include electrical conductivity, turbidity, pH, and solubility. Solubility measures a material’s ability to dissolve into a solvent (usually water). The matter in the water-pollutant mixture is made of small particles too small to be seen.
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