The evaporation is slower from impure solutions.
Not at all because when the water evaporates the salt remains unchanged
Only the water evaporates from the ocean and the salt remains. Mix up a glass of salt water and let it sit until the water evaporates and the glass will contain the same amount of salt you added to it.
The factors that may affect the rate at which salt dissolves in water are heat, the amount of water and the amount and type of salt you are using.
Water evaporates faster than salt water and sugar water.
Yes, it does. When the water evaporates, it can not take the salt with it, so if you left a glass of salt water out, when it is evaporated the salt will be on the glass.
The water in the salt water evaporates, leaving a dry residue of salt crystals.
Water mixed with salt does not affect the taste,bt it also depend on the amount of water mixed with the salt and the quantity of salt mixed with the water
They all evaporate at the same rate. The sugar and salt are in solution with the water. The sugar and salt will remain in the container after the water has evaporated. It will not affect the rate at which the water evaporates. I think you are wrong.Based on an experiment, sugar water evaporates the fastest followed by salt water as the more molecular weight the faster it evaporates.Sugar has more molecular weight than salt.
Two graduated beakers. Water and salt. Put a known amount of plain water in one and the same amount of salt water in the second beaker. Then observe which one evaporates faster.
This is salt water.
If the water was pure and had no salt already mixed in it then the same 20 grams of salt would be left, as salt doesn't evaporates on the temperature at which water does evaporates.
After water evaporation solid salt remain as a residue.