Karteikarten

C3- Chlorination

yasminen27 Chemistry GCSE Englisch 8 Karten

Karten in diesem Stapel (8)

1Why do we use chlorine to treat our water?It makes it safe by:
-Killing disease-causing micro-organisms.
-Prevents bacteria from entering after the treatment further down the pipe.
-Prevents the growth of algae, bad tastes and smells.
-Removes discolouration caused by organic compounds.
2Does everyone have access to clean water?No
Very expensive and in developing countries people have to walk miles to find it.
3What effect does clean water have?Increases life expectancy in all countries.
Reduces diarrhoea disease by 40%,
Decreases the risk of cholera, typhoid and dysentery.
4What can chlorine be made from? What happens to this chemical?Hydrogen Chloride, it is separated from the other chemicals before it can treat drinking water.
5Why do you have to use just pure chlorine?The compounds have different properties, therefor the water could just taste salty instead of being treated.
6What is the formula of oxidation of hydrogen chloride?4 hydrogen chloride plus oxygen
2 chorine and 2 water
7What are the disadvantages of chlorinating water? Why still chlorinate the water?Sometimes the chlorine can react with organic compounds which create chlorinated hydrocarbons. These have been proven to be cancerous.
But, the risks are small compared to what would happen if the water was not treated.
8Why must you be careful when handling chlorine?Chlorine gas is very harmful, irritating the respiratory system.
Liquid Chlorine on skin and eyes can cause chemical burns, which can be fatal.

Beschreibung: GCSE Chemistry (C3) Karteikarten am C3- Chlorination, erstellt von yasminen27 am 08/04/2016.
Erstellt von: yasminen27
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