Chemistry Unit 1A ReviewChemistry Unit 1A Review
Sources and Uses of WaterSources and Uses of Water
Cleaning WaterCleaning Water FiltersFilters
– remove solid remove solid materialsmaterials
CharcoalCharcoal– removes odorremoves odor
DistillationDistillation– removes removes
salts/ions/charged salts/ions/charged particlesparticles
Tyndall EffectTyndall Effect Positive = see the light = particles in Positive = see the light = particles in
the path of the lightthe path of the light Negative = don’t see the light = no Negative = don’t see the light = no
particles presentparticles present
Conductivity TestConductivity Test Positive = conducts electricity =light bulb Positive = conducts electricity =light bulb
will lights up = charged particles/ions/salts will lights up = charged particles/ions/salts are presentare present
•Negative = light bulb doesn’t light up = no charged particles/ions/salts
Hydrologic CycleHydrologic Cycle Groundwater = storage = aquiferGroundwater = storage = aquifer Percolation pond = replenishes Percolation pond = replenishes
groundwatergroundwater
Evaporation
Gas state
Condensation
Liquid state
Water SourcesWater Sources San JoseSan Jose
– ground water (.62%)ground water (.62%) OtherOther
– Glaciers - 2.11%Glaciers - 2.11%– Lakes - .009%Lakes - .009%– Atomosphere - .001%Atomosphere - .001%– Rivers - 0.0001%Rivers - 0.0001%
Water UseWater Use Main uses of waterMain uses of water
– irrigation (in the west)irrigation (in the west)– heating/cooling (all others)heating/cooling (all others)
Personal UsePersonal 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 Direct vs Indirect Uses of WaterWater
Direct = used “last”Direct = used “last”– boiled egg = water boiled inboiled egg = water boiled in– soup = water in soupsoup = water in soup
Indirect = used before, not Indirect = used before, not always by personalways by person– boiled egg = water for chicken, boiled egg = water for chicken,
grain, truck, cartongrain, truck, carton– soup = water for can, chicken, soup = water for can, chicken,
grain, processing, labelgrain, processing, label
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