Which is a chemical property example?

• A. Density
• B. Flammability
• C. Melting point
• D. Color

Answer: (B)

This question is about distinguishing chemical from physical properties. Flammability describes how a material reacts with a reactant, typically oxygen, to produce new substances during combustion. That chemical change—the material turning into different compounds like carbon dioxide and water—makes flammability a chemical property.

The other ideas describe physical properties: density is the mass per unit volume and can be measured without changing the substance; melting point is the temperature where a solid becomes a liquid, a change of state without forming new substances; color describes how the material appears and doesn’t require a chemical reaction to observe.