Question

a student is given a sample of an unknown solid and asked to identify it. the student begins by making a list of questions to investigate about the sample. which question would be the least useful in helping the student identify the sample? a. is the sample soluble in water? b. what is the weight of the sample? c. is the sample attracted to a magnet? d. what is the melting point of the sample?

Explanation:

The weight of a sample (B) is a general - property that doesn't specifically help identify a solid sample compared to other properties. Solubility in water (A), magnetic attraction (C), and melting point (D) are more characteristic properties that can be used to narrow down the possible identities of an unknown solid. Solubility can indicate the type of chemical bonds in the solid, magnetic attraction can suggest the presence of certain metals or compounds, and melting point is a characteristic physical property for many substances.

Answer:

B. What is the weight of the sample?