* Chemical properties describe how a substance behaves in a chemical reaction. They involve the formation of new substances with different compositions and properties.
* Physical properties can be observed without changing the substance's chemical composition. They describe the substance's appearance, smell, taste, density, melting point, etc.
When a substance reacts with another, it undergoes a chemical change, resulting in the formation of new substances. This change is a fundamental characteristic of the substance's chemical makeup.
Example:
* Physical property: Water is a clear, odorless liquid.
* Chemical property: Water reacts with sodium metal to produce hydrogen gas and sodium hydroxide. This reaction changes the chemical composition of water and creates new substances.
Therefore, the ability to react with other substances is a chemical property because it describes the substance's potential to undergo a chemical change and form new substances.
