Chemistry

Question Analysis
This question involves distinguishing between physical and chemical changes in the context of solution formation. The main focus is on applying the criteria for physical/chemical changes to a common dissolution process and providing justifying evidence.

Key Concept Explanation
A physical change alters the form or state of a substance without changing its chemical composition.
A chemical change produces one or more new substances with different chemical properties.
Dissolution is a physical change because the solute particles are dispersed but not chemically altered—they can be recovered by reversing the process (e.g., evaporation).

Step-by-Step Solution
1. Classify the change: Identify dissolving sugar as a physical change.
2. First piece of evidence: State that no new substance is formed (sugar molecules remain intact).
3. Second piece of evidence: Explain that the solute can be recovered by a physical process (evaporation of water).
4. Link evidence to definition: Connect both points to the definition of a physical change (no change in chemical composition).
5. Answer: 
Classification: Dissolving sugar in...