Which of the following is an example of a physical change?

• A. Melting of ice
• B. Burning of wood
• C. Rusting of iron
• D. Baking a cake

Answer: (A)

Verified step by step guidance

1. Understand the difference between physical and chemical changes: A physical change affects the form or appearance of a substance but does not change its chemical composition, while a chemical change results in the formation of new substances with different properties.
2. Analyze the options given: Melting of ice, Burning of wood, Rusting of iron, and Baking a cake.
3. Recognize that melting of ice involves a change in state from solid to liquid, which is a physical change because the chemical composition of H\_2O remains the same.
4. Identify that burning of wood, rusting of iron, and baking a cake all involve chemical reactions that produce new substances, indicating chemical changes.
5. Conclude that the example of a physical change among the options is the melting of ice.