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Water: Sources, Uses, and Cleaning Methods

Learn about the sources and uses of water, different filtration methods, and the hydrologic cycle. Discover how water is cleaned using filters, charcoal, distillation, and the Tyndall Effect. Understand conductivity tests and the importance of water in various applications.

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Water: Sources, Uses, and Cleaning Methods

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  1. Chemistry Unit 1A Review Sources and Uses of Water

  2. Cleaning Water • Filters • remove solid materials • Charcoal • removes odor • Distillation • removes salts/ions/charged particles

  3. Tyndall Effect • Positive = see the light = particles in the path of the light • Negative = don’t see the light = no particles present

  4. Conductivity Test • Positive = conducts electricity =light bulb will lights up = charged particles/ions/salts are present • Negative = light bulb doesn’t light up = no charged particles/ions/salts

  5. Hydrologic Cycle • Groundwater = storage = aquifer • Percolation pond = replenishes groundwater Gas state Condensation Evaporation Liquid state

  6. Water Sources • San Jose • ground water (.62%) • Other • Glaciers - 2.11% • Lakes - .009% • Atomosphere - .001% • Rivers - 0.0001%

  7. Water Use • Main uses of water • irrigation (in the west) • heating/cooling (all others)

  8. Personal Use • watering (1130 L/hour) *** • washing (180-680L/time) • showers/toilets (19L/min or flush) **** • drinking, cooking (varies) • about 300 L per day per person

  9. Direct vs Indirect Uses of Water • Direct = used “last” • boiled egg = water boiled in • soup = water in soup • Indirect = used before, not always by person • boiled egg = water for chicken, grain, truck, carton • soup = water for can, chicken, grain, processing, label

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