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Chapter 7, CHEM 105
Intructor: Angela McGuirk, MMCC
32
Chemistry
Undergraduate 1
01/10/2011

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Term
Colloid
Definition
A mixture having particles that are moderately large. They can pass through filters but cannot pass through semipermeable membranes
Term
Concentration
Definition
A measure o f the amount of solute that is dissolved in a specified amount of solution
Term
Crenation
Definition
The shriveling of a cell because of waterÂ’s leaving the cell when the cell is placed in a hypertonic solution
Term
Dialysis
Definition
A process in which water and small solute particles pass through a semipermeable membrane
Term
Dilution
Definition
A process by which water is added to a solution to increase the volume and decrease the concentration of the solute
Term
Electrolyte
Definition
A substance that produces ions when dissolved in water; its solution conducts electricity
Term
Equivalent
Definition
The amount of a positive or negative ion that supplies 1 mole of electrical charge
Term
Hemodialysis
Definition
A mechanical cleansing of the blood by an artificial kidney using the principle of dialysis
Term
Hemolysis
Definition
A swelling and bursting of red blood cells in a hypotonic solution because of an increase in fluid volume
Term
Henry's law
Definition
The solubility of a gas in a liquid is directly related to the pressure of that gas above the liquid
Term
Hydration
Definition
The process of surrounding dissolved ions by water molecules
Term
Hypertonic solution
Definition
A solution that has a higher particle concentration and higher osmotic pressure than the cells of the body
Term
Hypotonic solution
Definition
A solution that has a lower particle concentration and lower osmotic pressure than the cells of the body
Term
Isotonic solution
Definition
A solution that has the same particle concentration and osmotic pressure as that of the cells of the body
Term
Mass percent
Definition
The grams of solute in exactly 100 g of solution
Term
Mass/volume percent
Definition
The grams of solute in exactly 100 mL of solution
Term
Molarity
Definition
The number of moles of solute in exactly 1 L of solution
Term
Nonelectrolyte
Definition
A substance that dissolves in water as molecule; its solution will not conduct an electrical current
Term
Osmosis
Definition
The flow of a solvent, usually water, through a semipermeable membrane into a solution of higher solute concentration
Term
Osmotic pressure
Definition
The pressure that prevents the flow of water into the more concentrated solution
Term
Physiological solution
Definition
A solution that is isotonic with and exerts the same osmotic pressure as normal body fluids
Term
Saturated solution
Definition
A solution containing the maximum amount of solute that can dissolve at a given temperature. Any additional solute will remain undissolved in the container
Term
Semi permeable membrane
Definition
A membrane that permits the passage of certain substances while blocking or retaining others
Term
Solubility
Definition
The maximum amount of solute that can dissolve in exactly 100 g of solvent, usually water, at a given temperature
Term
Solute
Definition
The component in a solution that is present in the smaller quantity
Term
Solution
Definition
A homogeneous mixture in which the solute is made up of small particles that can pass through filters and semipermeable membranes
Term
Solvent
Definition
The substance in which the solute dissolves; usually the component present in greatest amount
Term
Strong electrolyte
Definition
A polar or ionic compound that ionizes completely when it dissolves in water. Its solution is a good conductor of electricity
Term
Suspension
Definition
A mixture in which the solute particles are large enough and heavy enough to settle out and be retained by both filters and semipermeable membranes
Term
Unsaturated solution
Definition
A solution that contains less solute than can be dissolved
Term
Volume percent
Definition
A percent concentration that relates the volume of the solute in exactly 100 mL of the solution
Term
Weak electrolyte
Definition
A substance that produces only a few ions along with many molecules when it dissolves in water. Its solution is a weak conductor of electricity
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