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Treacle was an old English word for medicine, and was also used to describe dark coloured undrinkable water, which from its foul palate was associated with the commonly held taste of medicine. Consequently a well where the water became undrinkable would be termed a âtreacle wellâ.
Description. The viscosity of a liquid is another term for the thickness of a liquid. Thick treacle-like liquids are viscous; runny liquids like water are less viscous. Gases exhibit viscosity in the same way. In this experiment, the viscosity of various liquids are compared. The viscosity of a liquid is another term for the thickness of a liquid. Thick ...