Astudent wants to determine whether an unknown solid is an ionic compound. he puts some in water and finds that it does not dissolve. he says that this proves the solid is ionic. which best evaluates the student's reasoning?

The student's reasoning is incorrect, because there are many ionic substances that are readily dissolved in water. An example of such a substance is table salt, sodium chloride. Another way of determining the type of bonding is by measuring the melting and boiling point of the solid. Ionic compounds tend to have high melting and boiling points.

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