Solution
When silver nitrate is added to a tap water solution, it can form insoluble silver chloride precipitate due to a reaction with chloride ions present in the tap water. This precipitate appears as a white cloudy material, which causes the solution to change in appearance.
If the solid substance is nonpolar, it will more likely dissolve better in an organic solvent rather than water. In this case, using distilled or tap water to prepare a solution may not make a significant difference in the solubility of the substance since it is nonpolar and not likely to dissolve well in water regardless.
The sample of tap water could be described as a homogeneous mixture because the ions are evenly distributed throughout the water. Specifically, it could also be described as a solution, as the ions are dissolved in the water.
Tap water is H2O (with some trace impurities). This makes it a covalent molecule.
Iodine turns blue when mixed with tap water because iodine forms a complex with starch in the presence of water, resulting in a blue-black color. This reaction is commonly used as an indicator for detecting the presence of starch in a solution.
a suspension
When tap water and salt water are mixed together, the salt dissolves in the water and becomes part of the solution. The resulting solution will have a higher salt content than the original tap water.
Clean tap water is a homogeneous solution.
When silver nitrate is added to a tap water solution, it can form insoluble silver chloride precipitate due to a reaction with chloride ions present in the tap water. This precipitate appears as a white cloudy material, which causes the solution to change in appearance.
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Unfiltered tap water is a pure substance
As long as its clean, clear tap water its a homogeneous mixture (since the various other things that are in the water exist only in solution).
In reality, yes, it is. Tap water contains dissolved minerals and gases. Certainly it is "clean" enough to drink, but there remain a number of dissolved elements and compounds that were not removed during processing. And there were a few things added, as well.
If the solid substance is nonpolar, it will more likely dissolve better in an organic solvent rather than water. In this case, using distilled or tap water to prepare a solution may not make a significant difference in the solubility of the substance since it is nonpolar and not likely to dissolve well in water regardless.
Windex, bleach, tap water (which is NOT pure water, but has dissolved chemicals and minerals), vinegar, etc.
Salt in a water solution will LOWER the Freezing Point of the resultant solution. Therefore the Saltwater will have to be cooled to a lower temperature. All other things being equal, that should take longer than the plain tap water.