NAEP Science Grade 12

Category - Science

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Which of the following observations about a certain pure solid would indicate most strongly that the solid is ionic?

Its water solution is a good conductor of electricity.
It is composed of small white crystals.
It has a density greater than 1.0 gram/cm 3.
It has a high melting point.

Explanation

Answer: A - Its water solution is a good conductor of electricity.

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