To determine if salt is dissolved in a clear glass of water, you would primarily rely on a couple of observations:
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Taste: If you can taste the salt when you sip the water, this is an indication that salt is present in the solution. However, tasting should be done cautiously and is not always a reliable method for everyone.
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Visual Observation: When salt is dissolved in water, it typically does not remain as visible individual particles. If you are able to see individual salt particles floating in the water, it indicates that the salt has not dissolved completely. A completely dissolved solution should appear clear without visible particles.
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Evaporation: When the water evaporates, salt will remain behind as it does not evaporate with the water. This could indicate that even if you can't taste or see the salt immediately, if the water evaporates leaving a residue, then salt was present in the solution.
In conclusion, the best way to confirm that salt is dissolved in water is:
- If taste is detectable and no individual particles are visibly present in the water, then it can be confirmed that salt is dissolved.
- If there are visible particles and they remain after evaporation, it suggests the salt has not dissolved.
So, based on the options given in your question:
- The correct observation would be: "The salt can be tasted and will remain when the water evaporates" signifies the presence of dissolved salt.