Hard Scale(Scale)
- Forms in steam boiler
-Has the appearance of a white and brown concentration
-smooth texture
Soft Scale(Sludge)
-Forms in the hot water heaters
-Appears as a thick ,brown or black sludge
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Sludge is a semi-solid residue formed by the accumulation of suspended solids in water, while scale is a hard deposit formed by the precipitation of minerals from water. Sludge usually forms in liquid form, while scale forms as a solid on surfaces like pipes or heating elements. Both can cause blockages and reduce the efficiency of systems like boilers or pipelines.
Chemical sludge is a type of sludge that forms as a result of chemical reactions in wastewater treatment processes. It typically contains residues from the chemical treatment of sewage. The main difference between chemical and biological sludge is their origin: chemical sludge forms from chemical treatments applied during wastewater treatment processes, while biological sludge comes from the natural breakdown of organic matter by microorganisms in the treatment process.
The Kelvin scale is an absolute temperature scale where 0K represents absolute zero. The absolute temperature scale refers to any temperature scale that starts at absolute zero, such as the Kelvin scale. So, the Kelvin scale is a specific type of absolute temperature scale.
To solve for electronegativity difference between two atoms, subtract the electronegativity values of the two atoms. Electronegativity values can be found on the Pauling scale. The greater the difference in electronegativity, the more polar the bond is.
The workers had to wade through thick sludge to clear the clogged drain.
To weigh a wet diaper, first weigh the baby on a scale. Then, remove the wet diaper and weigh the baby again. The difference in weight between the two measurements will give you the weight of the wet diaper.