Salt (sodium chloride) can be contaminated with other salts (intentionally or not).
salt
No. Water is called fresh simply when it does not have too much salt in it. Fresh water could still be contaminated with toxins or harmful organisms.
The purified salt could still not be safe to eat if it has been contaminated during handling or packaging. Additionally, additives or chemical residues from the purification process could render the salt unsafe for consumption. Lastly, improper storage conditions could lead to the development of harmful bacteria or moisture content that makes the salt unsafe to eat.
You can separate the water from the mixture through evaporation.
It is still water but contaminated.
Salt water is still salt water no matter where it goes as long as there is still salt in the water.
Salt itself cannot catch on fire because it is an inorganic compound. However, if salt is contaminated with combustible materials, those contaminants could potentially catch on fire.
Yes
If the original sample is unknowingly contaminated with a second anhydrous salt, the reported percent water in the hydrated salt will be too low. This is because the presence of the anhydrous salt will increase the overall weight of the sample without contributing to the water content calculation, leading to a lower reported percentage of water in the hydrated salt.
Yes, the Great Salt Lake still exists.
False: if the contaminated water has been collected. True: if the contaminated water is still in the ground. It is very easy to contaminate water that is in the ground or in aquifers. It is very difficult and yes, sometimes impossible to decontaminate ground water that is still in the ground.
Salt boxes are used to store salt for cooking as an alternative or in combination with salt shakers. One of disadvantages regarding salt boxes is that salt in boxes can be contaminated with other spices like sugar that sticks on the cook's fingers or spoon. Another disadvantage is that more salt will be wasted if the boxes are upside down.