Flashcards
chem, water topic
Flashcards do conjunto (23)
- 1name a drawback of hard watercreates limescale
- 2name a benefit of hard waterstrong bones and teeth
- 3how do we know its temporary hard watersoftens when boiled
- 4how do we know its permanent hard waterdoes not soften when boiled
- 5what does hard water containcalcium
- 6what does hard water containmagnesium ions
- 7how do you test for hard wateradd soap to water and shake. if creates a scum its hard water
- 8how do you test for soft wateradd soap to water and shake. if creates lather its soft water
- 9name a pro of boiling hard waterquick and easy
- 10name a con of boiling hard waterit only covers small amounts
- 11name a pro of ion exchangesoftens permanent and temporary hard water
- 12name a con of ion exchangeexpensive
- 13what can fluoride lead tocauses flurosis and cancer
- 14what does fluoride helpprevents decay and strengthens teeth
- 15what is a natural water supplyrivers, lakes
- 16what can natural water containmicrorganisms, bacteria, viruses
- 17how do we produce drinking watersedimentation, filtration and chloranation
- 18what is sedimentationsinking of large particles
- 19what is filtrationbreak down of small insoluble particles
- 20what is chlorinationkills bacteria
- 21name another way of producing drinking waterdesalination
- 22what is desalinationremoving salt from see water by using distillation
- 23where do people use desalinationhot and rich countries
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- FlashCards sobre chem, water topic, criado por emily dargan em 26-05-2018.
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- emily dargan
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