Shared Flashcard Set

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Act 30-37; 39 Key Words
MEMORIZE! These are numbers 49-73, skip 61/62
30
Science
8th Grade
02/21/2011

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Cards

Term
dissolved solids
Definition
substances found in a solution in water due to water breakdown
Term
distilled water
Definition
water without dissolved solids
Term
spring water
Definition
underground water held in soil and pervious rocks
Term
bacteria
Definition
a single celled organism with no nucleus
Term
cholera
Definition
acute intestinal infection caused by ingestion of contaminated waiter/food
Term
infectious
Definition
capable of being infected
Term
biological contamination
Definition
contamination caused by living organisms including bacteria and viruses
Term
chemical contamination
Definition
contamination caused by chemical substances such as fertilizer or gas
Term
waterborne disease
Definition
disease transmitted through contaminated water source
Term
water contaminantes
Definition
items that create pollution in various bodies of water
Term
phase
Definition
a stage in a process of change or development
Term
vapor
Definition
a visible suspension in the air of particles of various substances
Term
condensation
Definition
water turning from gas to liquid
Term
evaporation
Definition
water turning from liquid to gas
Term
precipitation
Definition
clouds condensing and water falling to the earth
Term
water cycle
Definition
path that water takes on earth as it goes through different phases
Term
dissolve
Definition
the incorporation of solid into a liquid
Term
soluble
Definition
able to be dissolved
Term
insoluble
Definition
not able to be dissolved
Term
solution
Definition
well mixed mixture in which particles are small and dissolved (ex. sea water)
Term
solute
Definition
a substance that dissolves in solvent
Term
solvent
Definition
substance in which the solute is dissolved
Term
mixture
Definition
each individual component keeps its own identity; matter made of 2 or more substances mixed together, but not chemically combined (ex. granite)
Term
colloid
Definition
mixture in which particles are mixed but not dissolved and particles do not settle out
Term
suspension
Definition
heterogeneous mixture in which some particles settle out ex. river water
Term
saturated solution
Definition
being solution where all available space has dissolved and extra crystals are at the bottom the most concentrated solution possible. too much sugar in water; most of it dissolves, but there is so much that some sinks to the bottom
Term
percolation
Definition
the movement of water from groundwater to surface water
Term
infiltration
Definition
the movement of surface water absorbed by ground
Term
heterogeneous mixture
Definition
substance in which components are not evenly mixed (ex. salad)
Term
homogeneous mixture
Definition
substance in which components are evenly mixed (ex. cake batter)
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