Potable Water (OCR GCSE Chemistry A, Combined (Gateway Science Suite)): Flashcards
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Potable water
Potable water
Water safe to drink
Dissolved substances in fresh water
Dissolved substances in fresh water
Low levels
What filtration removes
What filtration removes
Insoluble particles
What sterilisation kills
What sterilisation kills
Harmful microbes
3 water sterilisation methods
3 water sterilisation methods
Chlorine, ozone, UV light
Desalination
Desalination
Making seawater potable
Main desalination method
Main desalination method
Distillation (boiling seawater)
Desalination drawback
Desalination drawback
Energy-intensive & costly
Alternative desalination method
Alternative desalination method
Membrane systems
Fluoridation
Fluoridation
Adding fluoride to water supply
Fluoride benefit
Fluoride benefit
Prevents tooth decay
Who decides fluoridation in UK
Who decides fluoridation in UK
Individual local authorities
Fluoride at high concentrations causes
Fluoride at high concentrations causes
Tooth discolouration/decay (fluorosis)
First UK fluoridation scheme
First UK fluoridation scheme
Birmingham, 1964
Desalination plant location
Desalination plant location
Near the sea