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Showing posts with label
PISA
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Showing posts with label
PISA
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Sunday, February 7, 2021
pH CHANGE AS THE CAUSE OF TOOTH DECAY
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Tooth decay starts when the pH of the mouth is lower than 5.5. Tooth enamel, made up of calcium hydroxyapatite (a crystalline form of calc...
Refined sugar
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Sucrose is a common sugar. It is a disaccharide, a molecule composed of two monosaccharide units ie glucose and fructose. Sucrose is prod...
MANUFACTURING PROCESS OF SOAP
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The fats and oils required for manufacturing soap are extracted from the plants and animals. To make the fatty acids called triglyceride...
Valence
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Valence , also spelled valency , in chemistry , the property of an element that determines the number of other atoms with which an atom ...
Horrendous air pollution in India
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India is once again heading into the worst time of year for air pollution, a season where the country’s notoriously poor quality becomes eve...
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