Which term describes the temperature at which a substance changes from a solid to a liquid?

• A. Freezing point
• B. Sublimation point
• C. Boiling point
• D. Melting point

Answer: (D)

Verified step by step guidance

1. Understand the phase changes of matter: solid to liquid, liquid to gas, and solid to gas.
2. Identify the term for the temperature at which a solid becomes a liquid, which involves the input of energy to overcome the forces holding the solid structure together.
3. Recall that the temperature at which a solid changes to a liquid is called the melting point.
4. Differentiate this from other terms: freezing point (liquid to solid), boiling point (liquid to gas), and sublimation point (solid to gas).
5. Conclude that the correct term describing the temperature at which a substance changes from solid to liquid is the melting point.