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PHYPHARM > MOLECULAR DISPERSIONS > Flashcards

MOLECULAR DISPERSIONS Flashcards

1
Q

dispersed phase completely dissolved – homogenuous molecular dispersion

A

TRUE SOLUTION

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2
Q

particle size of true solution

A

below 1nm

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3
Q

can’t scatter light and can’t be visualize using the microscope

A

TRUE SOLUTION

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4
Q

Multi-component – mixture of two or more substances, forming a single phase

A

TRUE SOLUTION

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5
Q

2 components

A

DISPERSED PHASE
DISPERSION MEDIUM

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6
Q

internal phase

A

DISPERSED PHASE

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7
Q

external phase

A

DISPERSION MEDIUM

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8
Q
  • The diameter of particles is roughly 1 to 500 nm
  • Falls between true solution and coarse dispersion
A

COLLOIDAL SOLUTION

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9
Q
  • The diameter of particles is greater than 500 nm
  • 2 or more phases
A

SUPENSION & EMULSIONS

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10
Q

Components/Constituents of true solutions

A

solute
solvent

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11
Q

lesser amount (solid)

A

SOLUTE

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12
Q

greater amount (liquid, water)

A

SOLVENT

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13
Q

solute + solvent

A

SOLUTION

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14
Q

used to indicate a multi-compartment system in which one or more solute is dissolved in a solvent.

A

SOLUTION

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15
Q

Drug properties in solution are important because a drug solution is dispersed in

A

MOLECULAR LEVEL

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16
Q

essential for a drug to exert its chemical, biochemical, and pharmacological effects.

A

DRUG PROPERTIES

17
Q

The quantity of a drug that indicates the strength of its chemical and pharmacological activities is not the weight of the drug, but rather the number of molecules or ions available for the drug action.

A

SOLUTE

18
Q

used to describe drug’s pharmacologic action

A

CONCENTRATION / MOLECULAR EXPRESSIONS

19
Q

Solutes are expressed in

A

moles, osmoles, meqwt

20
Q
  • A substance (an acid, base, or salt) that is in an aqueous solution ionizes to positive ions (cations) and negative ions (anions)
  • Has greater freezing point depression and boiling point elevation than do non-electrolytes of same concentration
A

ELECTROLYTES

21
Q
  • Substances that do not ionize when dissolve in water and therefore do not conduct electricity through the solution.
  • Lesser greater freezing point depression and boiling point elevation
A

NON-ELECTROLYTES

22
Q

almost all drugs are

A

organic compounds

23
Q
  • Substances that completely ionize in water
  • Degree of ionization is pH independent
  • ionic compounds
A

STRONG ELECTROLYTES

24
Q
  • Substances that partially ionize in water
  • Degree of ionization is pH dependent
  • organic compounds w/ EN element
A

WEAK ELECTROLYTES

25
Q

a prescription medicine used to treat the symptoms of low blood pressure during anesthesia (hypotension)

A

EPHEDRINE

26
Q

A solution composed of only two substances (a solvent & a solute)

A

BINARY SOLUTION

27
Q

physical properties of systems that depend on the quantity of the matter in the system

A

EXTENSIVE PROPERTIES

28
Q

physical properties that are independent of the amount of the substances in the system

A

INTENSIVE PROPERTIES

29
Q

depend mainly on the number of particles in a solution

A

COLLIGATIVE PROPERTIES

30
Q

depend on the total contribution of the atoms in the molecule or on the sum of the properties of the constituents in a solution

A

ADDITIVE PROPERTIES

31
Q

depend on the arrangement and a lesser extent on the number and kind of atoms withinn a molecule

A

CONSTITUTIVE PROPERTIES

32
Q

can be expressed either in terms of the quantity of solute in a definite volume of solution or as the quantity of solute in a definite mass of solvent or solution

A

CONCENTRATION OF A SOLUTION

33
Q

expressions commonly used in analytical work

A

MOLARITY & NORMALITY

34
Q

moles of solute in 1L of solution

A

MOLARITY

35
Q

gram equivalent weights of solute in 1L solution

A

NORMALITY

36
Q

moles of solute in 1000g of solvent

A

MOLALITY

37
Q

grams of solute in 100g of solution

A

%w/w

38
Q

milliliters of solute in 100mL of solution

A

%v/w

39
Q

grams of solute in 100mL of solution

A

%w/v

PHYPHARM (28 decks)

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