elly has some sand in a bucket, but she thinks that there may be some salt mixed in with her sand. How can she determine if there is salt in the sand? A. If she puts water in the bucket, the salt will dissolve. B. If she evaporates the sand the salt will be left behind. C. If she leaves the bucket alone the salt will rise to the top. D. If she puts water in the bucket, the sand will dissolve.
Question
elly has some sand in a bucket, but she thinks that there may be some salt mixed in with her sand. How can she determine if there is salt in the sand? A. If she puts water in the bucket, the salt will dissolve. B. If she evaporates the sand the salt will be left behind. C. If she leaves the bucket alone the salt will rise to the top. D. If she puts water in the bucket, the sand will dissolve.
Solution
The correct answer is A and B.
A. If she puts water in the bucket, the salt will dissolve. This is because salt is soluble in water. She can then filter the mixture to separate the sand from the saltwater solution.
B. If she evaporates the sand the salt will be left behind. After filtering the mixture, she can then evaporate the water from the saltwater solution. As the water evaporates, the salt will be left behind.
C. If she leaves the bucket alone the salt will not rise to the top. This is incorrect because salt does not have the property to rise to the top of a sand mixture.
D. If she puts water in the bucket, the sand will not dissolve. This is because sand is insoluble in water.
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