INF1 - D. DISPERSIONS, SOLUBILITY, DISSOLUTION-COVERED Flashcards

1
Q

what is a dispersion

A

a system in which particles of one material are dispersed in a continuous phase of another material

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2
Q

describe solutions

A

homogeneous
particle size: 0.01-1nm ions or molecules
don’t separate on standing

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3
Q

describe colloids

A

heterogeneous
particle size: 1-1000nm large molecules or aggregates
don’t separate on standing

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4
Q

describe suspensions

A

heterogeneous
particle size: >1000nm large particles or aggregates
particles sediment

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5
Q

to distribute around the body, what type of fluids do drugs need to be transported in

A

aqueous

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6
Q

why do many drugs need to have hydrophobic characteristics

A
  • to partition across lipid membranes
  • bind with receptors in pockets
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7
Q

what is dissolution

A

process where a solute in gaseous, liquid, or solid phase dissolves in a solvent to form a solution

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