Quicksand
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Quicksand, also known as sinking sand, is a colloid consisting of fine granular material and water. It forms in saturated loose sand when the sand is suddenly agitated. When water in the sand cannot e
Quicksand and a warning sign about it at a gravel quarry in England
Quicksand on the Thames
A group of hikers encountering quicksand on the banks of the Paria River, Utah
Quicksand warning sign near Lower King Bridge, Western Australia
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
Quicksand
…Quicksand, also known as sinking sand, is a colloid consisting of fine granular material (such as sand, silt or clay) and water. It forms in saturated loose sand when the sand is suddenly agitated. When…
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