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Yes it does, when its temperature drops below 32° F. If it's still in the pipes when that happens, that can be a real problem.
Technically the litmus paper should stay blue, but depending on where you live and how your water is treated it can become pink or red. If you use distilled water then it will stay a neutral color but with traces of minerals and chlorine to make tap water safer to drink, the water either becomes slightly acidic or basic. It really just depends on where you live.
There are different types of Litmus paper and so the exact color may differ for each of these types. Also, water itself is neutral when pure but most tap water is slightly basic so it depends on what you use. -- Tap water will not cause any colour change when tested with litmus paper. Blue litmus paper remains blue, the same goes for red litmus paper. Although the above statement says that tap water is slightly basic, the pH is still close to neutral and will not be significant enough to cause a colour change for the litmus paper.
Nothing, because calcium carbonate is insoluble in pure water but slightly acidic water as tap water may dissolve it slowly.
If a steel pipe is fitted with a brass tap, it is the brass tap that will get corroded.
Blue tap is a drink
Pretty much the same thing as happens when you tap aluminum with a hammer.
Pure tap water is water having only some infinitesimal impurities. Have you a blue tap water in your bath ?
Nothing noteworthy happens if mentos are put in tap water; they simply dissolve slowly.
As far as I know, it's available on tap and in a bottle.
It chemically reacts to the tap water, so the green in iodine, reacts violently and causes a mixture according to make it blue.
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When tap water gets contaminated there is high risk for diseases to spread.
Gets wet.
It unlocks a new level.
First touch the red button to hear the sound. That is the sound of a correct action. Touch a blue button to her the sound. That is the sound of a wrong action. Then tap all three buttons (2 blue and 1 red to make purple triangle) Then tap the red button (to make red line) Then tap both blue buttons (to make blue plus sign) Then tap all three buttons again. If during any of these actions you hear the wrong sound you have to start from the top.
The Rape Dungeon.