Colloid
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A colloid is a mixture in which one substance, consisting of microscopically dispersed insoluble particles, is suspended throughout another substance. Some definitions specify that the particles must
Scanning electron microscope image of a colloid
Colloidal silica gel with light opalescence
A dollop of hair gel
Creams are semi-solid emulsions of oil and water. Oil-in-water creams are used for cosmetic purpose while water-in-oil creams for medicinal purpose
Gel
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A gel is a semi-solid that can have properties ranging from soft and weak to hard and tough. Gels are defined as a substantially dilute cross-linked system, which exhibits no flow when in the steady s
Colloid
…Some definitions specify that the particles must be dispersed in a liquid, while others extend the definition to include substances like aerosols and gels. A colloid has a dispersed phase (the suspended particles) and a continuous phase (the medium of suspension). The term colloidal suspension refers…
An upturned vial of hair gel
Silica gel
Hydrogel of a superabsorbent polymer