Flashcards
Water Treatment Flashcards
Cards in this deck (16)
- 1SoluteChemical which is dissolved in a solvent to form a solution
- 2Gases dissolved in waterInclude oxygen and carbon dioxide
- 3Ions in natural water suppliesInclude sodium, calcium, magnesium, sulfate, hydrogencarbonate and chloride
- 4AbstractionExtracting water, either temporarily or permanently, for human use
- 5DesalinationRemoving salt from sea water to convert it into water fit for drinking
- 6SedimentationWater is left to sit in a reservoir so that larger insoluble particles will settle to the bottom
- 7FiltrationWater is passed through filters to remove smaller insoluble particles
- 8ChlorinationChlorine is added to the water to kill bacteria. The chlorine kills microbes - including microbes that cause potentially-fatal diseases such as typhoid, cholera and dysentery.
- 9FluoridationAddition of fluorine to water to prevent tooth decay
- 10DemineralisationWhen acid causes calcium and phosphates, of which enamel is largely composed, to dissolve
- 11EnamelOuter surface of the tooth, composed mostly of calcium and phosphates
- 12RemineralisationWhen the saliva neutralises the acid and the minerals re-enter the enamel
- 13Dental fluorosisA condition in which the enamel gets white patches on it if exposed to high levels of fluorine
- 14AquifersUnderground rocks containing ground water
- 15Test for chlorineChlorine has a characteristic sharp, choking smell. It also makes damp blue litmus paper turn red, and then bleaches it white. Chlorine makes damp starch-iodide paper turn blue-black
- 16ReservoirAn artificial lake, made by building a dam to accumulate and save river water in the valley behind
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- User has deleted their subject information Flashcards on Water Treatment Flashcards, created by Deleted user on 18/07/2017.
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- Created by Niamh Ryan · Jul 14, 2017
- Copied by Niamh Ryan · Jul 18, 2017
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