Chemistry Unit 1A Review - ESUHSD

Chemistry Unit 1A Review Sources and Uses of Water Cleaning Water Filters remove solid materials Charcoal

removes odor Distillation removes salts/ions/ charged particles Tyndall Effect

Positive = see the light = particles in the path of the light Negative = dont see the light = no particles present Conductivity Test Positive = conducts electricity =light bulb will lights up = charged particles/ions/salts are present Negative = light bulb doesnt light up =

no charged particles/ions/salts Hydrologic Cycle Groundwater = storage = aquifer Percolation pond = replenishes groundwater Gas state Condensation

Liquid state Evaporation Water Sources San Jose ground water (.62%) Other

Glaciers - 2.11% Lakes - .009% Atomosphere - .001% Rivers - 0.0001% Water Use

Main uses of water irrigation (in the west) heating/cooling (all others) 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

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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