Solutions, Acids, and Bases Online Practice

Question

Complete this assessment to review what you’ve learned. It will not count toward your grade.
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Question
Which statement best describes the difference between dissolution and melting?(1 point)
Responses

Dissolution involves the formation of a new substance, while melting involves a state change.
Dissolution involves the formation of a new substance, while melting involves a state change.

Polar compounds dissolve, while ionic compounds melt.
Polar compounds dissolve, while ionic compounds melt.

Ionic compounds dissolve, while polar compounds melt.
Ionic compounds dissolve, while polar compounds melt.

Dissolution involves a state change, while melting involves the formation of a new substance.

Answer 1

The best response to the question about the difference between dissolution and melting is:

Dissolution involves the formation of a new substance, while melting involves a state change.

Here's why:

• Dissolution refers to the process where a solute (like salt) becomes incorporated into a solvent (like water), resulting in a solution. This can be considered a chemical change where the solute breaks down into its ions or molecules.
• Melting, on the other hand, is a physical change where a solid becomes a liquid without altering its chemical structure.

Thus, melting does not involve the formation of a new substance, while dissolution does.