What is a chemical property? Provide an example?

What is a chemical property? Provide an example?

• A. A characteristic that describes how a substance changes to form new substances; example: reactivity with acid or flammability.
• B. A property that can be observed without changing the substance.
• C. The total energy content of a substance.
• D. The color of the substance.

Answer: (A)

A chemical property describes how a substance behaves in a chemical change and how it forms new substances. It tells what the material can do when it encounters another substance, such as reacting with acids or being flammable. For example, sodium reacting with water to produce hydrogen gas and sodium hydroxide shows a chemical property because the substance changes its identity during the reaction. In contrast, observing color or a substance’s state of matter are physical properties, which can be seen without altering the substance, and energy content isn’t about how a substance changes chemically. So the idea is that chemical properties reveal what a substance can do as it undergoes a chemical change, with reactivity or flammability as clear examples.

A chemical property describes how a substance behaves in a chemical change and how it forms new substances. It tells what the material can do when it encounters another substance, such as reacting with acids or being flammable. For example, sodium reacting with water to produce hydrogen gas and sodium hydroxide shows a chemical property because the substance changes its identity during the reaction. In contrast, observing color or a substance’s state of matter are physical properties, which can be seen without altering the substance, and energy content isn’t about how a substance changes chemically. So the idea is that chemical properties reveal what a substance can do as it undergoes a chemical change, with reactivity or flammability as clear examples.