Hard Water--
Hard water is water that has a high mineral content (water with a low mineral content is known as soft water). This content usually consists of high levels of metal ions, mainly calcium (Ca) and magnesium (Mg) in the form of carbonates, but may include several other metals as well as bicarbonates and sulfates. While it is not generally dangerous to safety or health, it does generally cause potentially costly nuisance problems in the home and in industry. On the other hand, hard water is considered to be ideal for brewing certain styles of beer. Kentucky's distinctive Bourbon whiskey owes its flavor in part to the high calcium content of its groundwater (compared to the pilsener style of beer, the brewing of which requires very soft water). Some hard water chemicals, particularly silicates and calcium carbonate, are also effective corrosion inhibitors, and can prevent damage to pipes or contamination by potentially toxic corrosion products.
The simplest way to determine if water is hard or soft is the lather/froth test. If the water is very soft, soap will tend to lather up easily when agitated, whereas with hard water it will not. Toothpaste will also not froth well in hard water. More exact methods of hardness detection use a wet titration method to determine hardness
2006-06-05 10:42:25
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answer #1
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answered by Carlito Sway 5
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Hard Water usually does not lather well.. The harder the water, the less lather. The softer the water, the more lather.
Hard water can leave hard water stains which are a pink-ish orange color on white appliances/fistures. They are often mistaken for iron or rust stains.
2006-06-05 17:42:41
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answer #2
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answered by tressa1220 3
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Hard water is the term you're looking for.
Hard water is water that has a lot of mineral (usually calcium, magnesium and iron, among other things) ions disolved in it. These ions bond to the soap molecules turning them into soap scum. Appliances that heat water can also precipitate out the minerals, usually forming coatings on the heating elements that reduce their effectiveness and life.
Water softeners work by exchanging these mineral ions for ions of sodium or potassium, which tend to cause less trouble. The downside to that is that when used for drinking water, the sodium and/or potassium can cause health effects if you already get too much sodium or potassium in your diet.
Other than heating, drinking and cleaning, there is little meaningful difference between hard and soft water, but since that's the majority of household use, lots of folks install water softeners.
2006-06-05 17:47:29
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answer #3
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answered by nwsayer 2
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Hard water prevents lathering. My city has 25 grains of hardness. The softer the water, the more 'lathery' it gets.
Soft water allows people to use less soap in laundry & dishwashers.
2006-06-05 18:23:27
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answer #4
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answered by RDHamm 4
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Soft
2006-06-05 17:40:45
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answer #5
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answered by parshooter 5
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it is called hard water. it has many dissolved minerals in it
hard water also causes constipation.
water in the city is softened by chlorination,
but well water in rural and specially mountainous area is
very hard.
People use water softener in thier plumbing(pipes lines)
2006-06-05 17:46:43
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answer #6
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answered by cookiedada 3
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hard water
2006-06-05 18:20:51
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answer #7
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answered by Stela P 2
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hard water.
2006-06-05 17:40:38
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answer #8
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answered by HAWK 3
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'soft' water
2006-06-05 17:41:01
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answer #9
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answered by Tom B 4
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Hard.
2006-06-05 17:39:36
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answer #10
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answered by xyz_gd 5
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