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3rd quarter test

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Solvent
the liquid or gas that does the dissolving
Solute
the substance that gets dissolved by the solvent
Solution
mixture of substances where one is dissolved in the other
Suspension
mixture of substances that are not dissolved in each other
Dissolved
when particles of the solute are completely surrounded by particles of the solvent
Precipitate
a solid that comes out of solution
Soluble
able to dissolve
Insoluble
unable to dissolve
Dilute
(v): to make thinner or less concentrated; (adj): solution that contains a small amount of solute
Concentrated
solution that contains a large amount of solute
Saturated
a solution that cannot dissolve any more solute
Concentration
mass of solute per unit volume of solvent; amount of solute in certain amount of solvent
Solubility
concentration of a saturated solution
Polar covalent bond
a type of covalent bond in which electrons are shared unequally
Polar molecule
has opposite slightly charged ends
Hydrogen bond
weak attractive interaction
Adhesion
the tendency of unlike molecules to stick (water sticking to other molecules)
Cohesion
the tendency of molecules to stick to themselves (water sticking to water)
Surface tension
makes it difficult to break the surface of a liquid
Capillary action
the ability of a liquid to flow against gravity in a thin tube or in a porous material like paper
Watershed
sloping area of land that drains all of the water in it and on it into one body of water
Ground water
water that is in the ground
Nutrients (nitrates and phosphates)
substances necessary for growth of all living things; nitrogen and phosphorus; too much is bad
Toxins
substance that is unhealthy even in small amounts
Turbidity
cloudiness or clarity of water
Dissolved oxygen (DO)
oxygen dissolved in water; necessary for plants and animals to breathe
Polluted runoff
water that does not soak into the ground but instead runs along the surface
Impervious surfaces; pervious surfaces
doesn't soak up water; does soak up water
Point source pollution
can pinpoint source of pollution
Non point source pollution
cannot pinpoint source of pollution; don't know where comes from
Wastewater
sewage water that includes animal and human waste
Effluent
cleared waste water
Influent
incoming sewage
Silt fence
fence set up to catch dirt and erosion during construction
Riparian buffer
vegetation along water backs that help hold soil in place