Global Reserves & Potable Water (AQA GCSE Chemistry Combined Science): Flashcards

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Resources & Sustainability
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Chemical formula of water

H2OH_2O

Examples of ions dissolved in water

Mg2+Mg^{2+}, Ca2+Ca^{2+}, Na+Na^+

Gases dissolved in rainwater

Oxygen and carbon dioxide

Effect of CO2CO_2 dissolved in water

Lowers the pH of water

Natural pollutants in water

Microorganisms like bacteria and viruses

Examples of man-made pollutants in water

Fertilisers, pesticides, household & industrial waste

Average daily water use per person in UK

150 litres

Definition of drought

Dry conditions with insufficient rain to replenish supplies

When water shortages occur

When demand for water exceeds supply

Industrial use of water

Cooling machinery in factories

Agricultural use of water

Growing food on farms

What quality of life depends on (water)

Availability of clean water

Conserving water: washing machines/dishwashers

Only use when full

Conserving water: showers vs baths

Take showers (use less water)

Conserving water: waste water

Reuse for plants and car washing

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