is a  form of instability in aqueous and non-aqueous gels, in which  the dispersion medium is squeezed out in droplets .Question 11AnswerImbibitionRapid Sedimentation Syneresis SwellingCaking

Match the following terms related to gels with the correct definition or description. - imbibition - swelling - syneresis - thixotropy - xerogel A. the dispersion medium is expressed in droplets and the gel shrinks B. taking up a liquid with an increase in volume C. a gel changes from semisolid to liquid without a change in volume or temperature D. taking up liquid without increasing in volume E. a gel from which the liquid has been removed, leaving only the framework (the dispersed phase and any solids in the dispersion medium)

A substance that is solute in a colloidal stage.AerogelDispersed phaseDispersed mediumBoth B and C

Small or large molecules dispersed in an aqueous liquid to which a gelling agent has been added are called gels or jellies. True False

Aggregation and coalescence of the dispersed phase can affect the stability of a dispersed system. What can be done about it? A. shake the container well before dispensing the dose to the patient B. prepare the formulation with a thickener to increase the viscosity of the external phase or dispersion medium C. choose a compatible emulsifying agent with an appropriate HLB number for the dispersed phase D. all of these are solutions to the problem, so this is the answer

Match the terms to the correct description or definition. - coarse dispersion - fine dispersions - colloidal dispersions - dispersed phase - dispersing phase A. includes particles 0.5-10µm B. dispersion medium, the vehicle, analogous to the water in an O/W emulsion C. particles much smaller than the others, includes gels and magmas D. includes the suspensions and emulsions, particles 10-50µm E. the substance distributed in the vehicle, analogous to the oil in an O/W emulsion