Tap water is a mixture becasue of the differnet chemicals in water.
Why is tap water being used as a test substance
Normal tap water can be considered as fairly pure and homogeneous; only ultrapure water is correctly pure. Sometimes tap water may contain insoluble impurities.
Tap water is a mixture of water (H2O) and minerals used to purify it.
Tap water is not a pure substance because it is mixed with chemicals that purify it and if it was from the ground it has naturally occurring minerals mixed in it.
City tap water contains many substances dissolved in it. So city tap water is a mixture. Different types of gasses, substances can be dissolved in this water.
Tap water is not a pure substance because it is mixed with chemicals that purify it and if it was from the ground it has naturally occurring minerals mixed in it.
oils are insoluble in water
it is a pure substance if your still unsure google it
Tap water is not a pure substance. Water has particles in it. Some tap water also contains fluoride. Distilled water has all of the particles taken out of it and is considered pure water.
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.
A small amount of insoluble residue remain.
It would be a mixture of various minerals and chemicals if any were present in the water before evaporation