Which term best describes the process that occurs when an egg cooks in a pan on the stove?

• A. Mixture formation
• B. Chemical change
• C. Phase change
• D. Physical change

Answer: (B)

Verified step by step guidance

1. Step 1: Understand the definitions of the terms given: Mixture formation, Chemical change, Phase change, and Physical change.
2. Step 2: Recall that a physical change involves changes in state or appearance without altering the chemical composition, such as melting or boiling.
3. Step 3: Recognize that a phase change specifically refers to changes between solid, liquid, and gas states, like ice melting to water.
4. Step 4: Consider that mixture formation involves combining substances without chemical bonding or reaction, where each component retains its identity.
5. Step 5: Identify that cooking an egg causes proteins to denature and form new chemical bonds, changing the egg's chemical structure, which is characteristic of a chemical change.