Hard Water
- Created by: Sneha
- Created on: 10-03-13 20:41
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- Hardwater
- soft water: water that forms a rich thick lather
- hard water: more difficult to form a lather with soap and water.
- soapless detergents do not produce scum in hardwater.
- Rain falls through the air and dissolves carbon dioxide, making it slightly acidic.
- This falls into streams and rivers. These then run along rocks (limestone). The calcium carbonate reacts with the weakly acidic solution. This then becomes calcium hydrogencarbonate.
- Calcium hydrogencarbonate is soluble in water.
- This falls into streams and rivers. These then run along rocks (limestone). The calcium carbonate reacts with the weakly acidic solution. This then becomes calcium hydrogencarbonate.
- expensive - much more soap required.
- Heating temporary hard water produces an insoluble solid called scale.
- This can "fur" up our radiators and kettles and make them less efficient. - poor conductor of energy.
- Longer to boil water, more energy used up and this costs more money.
- This can "fur" up our radiators and kettles and make them less efficient. - poor conductor of energy.
- Hard water contains dissolved compounds that react with soap to form scum
- Hardwater
- soft water: water that forms a rich thick lather
- hard water: more difficult to form a lather with soap and water.
- soapless detergents do not produce scum in hardwater.
- Rain falls through the air and dissolves carbon dioxide, making it slightly acidic.
- This falls into streams and rivers. These then run along rocks (limestone). The calcium carbonate reacts with the weakly acidic solution. This then becomes calcium hydrogencarbonate.
- Calcium hydrogencarbonate is soluble in water.
- This falls into streams and rivers. These then run along rocks (limestone). The calcium carbonate reacts with the weakly acidic solution. This then becomes calcium hydrogencarbonate.
- expensive - much more soap required.
- Heating temporary hard water produces an insoluble solid called scale.
- This can "fur" up our radiators and kettles and make them less efficient. - poor conductor of energy.
- Longer to boil water, more energy used up and this costs more money.
- This can "fur" up our radiators and kettles and make them less efficient. - poor conductor of energy.
- Scum is an insoluble salt.
- Hardwater
- contains dissolved calcium and magnesium ions.
- Dissolve when streams and rivers flow on rocks that have calcium or magnesium ions.
- contains dissolved calcium and magnesium ions.
- contains dissolved calcium and magnesium ions.
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