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Chem QII

Solutions/Acids, Bases, Salts, Ionization

QuestionAnswer
homogeneous mixtures of two or more substances true solutions
solid solutions are known as alloys
the substance dissolved solute
the substance that does the dissolving AKA "vehicle" solvent
the measure of how well two substances mix solubility
a solution that contains all the solute the solvent can hold at a given temperature is saturated
a solution that contains less solute than it can hold is unsaturated
true or false: supersaturated solutions are stable False
3 Factors which influence solubility: 1) nature of the solvent and nature of the solute, 2) temperature, 3) pressure
a solution that contains a relatively small amount of solute dilute solution
a solution that contains a relatively large amount of solute concentrated solution
the weight of the solute divided by the total weight of the solution times 100 describes what measurement? percent by weight/mass
the volume of the solute divided by the total volume of the solution times 100 describes what measurement? percent by volume
formaldehyde dissolved in water is called formalin
formalin is what percent formaldehyde by weight? 37% by weight
formalin is what percent formaldehyde by volume? 40% by volume
the concentration of a very dilute solution is often expressed using parts per million
equation for parts per million (ppm) ppm= mg of solute/L of solution
this term expressed the concentration of formaldehyde in embalming fluid index
the number of grams of pure formaldehyde gas in 100 mL of solution index
movement from regions of higher concentration to regions of lower concentration diffusion
the simple diffusion of water osmosis
when a body with normal moisture content is embalmed, the injected embalming fluid should be slightly a) hypertonic, b) hypotonic, c) isotonic to the contents of the tissues hypotonic
initial fluid injected into edematous bodies should be slightly a) hypertonic, b) hypotonic, c) isotonic hypertonic
fluids used to embalm dehydrated bodies should be slightly a) hypertonic, b) hypotonic, c) isotonic hypotonic
particle size between 1 and 100 um colloid
particle size greater than 100 um suspension
particle size less than 1 um true solution
can pass through both filters and membranes true solution
can pass through filters, but not membranes colloid
cannot pass through filters nor membranes suspension
particles which can be seen with the naked eye suspension
particles which can be seen with a microscope colloid
particles which can be seen only with an electron microscope true solution
particles which exhibit molecular movement true solution
particles which exhibit Brownian (random) motion colloid
particles which move only by the force of gravity suspension
change blue litmus to red acids
acids react with bases to form water and a salt
the reaction of acids and bases to form water and a salt is called a _____ reaction neutralization
change red litmus blue bases
nonmetallic oxides react with water to form acids (called acid anhydrides)
metallic oxides react with water to form bases (called basic anhydrides)
composed of metallic elements or the positive ammonium ion in combination with one or more ions of a nonmetallic element salts
the major chemical reaction of salts by which the ions of a salt "break apart" water molecules into H+ and OH- ions hydrolysis
the measure of hydrogen ion concentration pH
the negative logarithm of the hydrogen-ion concentration pH
pH of 7 is neutral
pH of less than 7 is acidic
pH of more than 7 is basic
pH of human gastric juice 1-3
pH of pure water 7
pH of blood 7.3-7.5
pH of embalming fluid 6.5-9.0
substances that, in solution, are capable of neutralizing, within limits, both acids and bases and thereby maintaining the original or constant pH of the solution buffers
Created by: amyziolkowski