Which of the following is an example of a chemical property?

• A. Melting point of ice
• B. Density of mercury
• C. Ability of iron to rust
• D. Color of copper metal

Answer: (C)

Verified step by step guidance

1. Understand the difference between physical and chemical properties: Physical properties can be observed or measured without changing the substance's identity, while chemical properties describe a substance's ability to undergo chemical changes and form new substances.
2. Analyze each option to determine if it describes a physical or chemical property:
3. Melting point of ice is a physical property because it involves a change in state without changing the chemical identity of water.
4. Density of mercury is a physical property because it is a measure of mass per unit volume and does not involve a chemical change.
5. Ability of iron to rust is a chemical property because it describes iron's tendency to react with oxygen and form a new substance (iron oxide).
6. Color of copper metal is a physical property because it is an observable characteristic that does not involve a chemical change.