* Chemical Property: A characteristic of a substance that describes how it reacts or changes when interacting with other substances. Chemical properties can only be observed during a chemical reaction.
* Length: A physical property that describes the distance between two points. It doesn't involve chemical changes.
* Color: A physical property that describes how a substance reflects light. It doesn't involve chemical changes.
* Reactivity: This is a chemical property. It describes how readily a substance undergoes a chemical reaction with other substances. For example, the reactivity of sodium is very high, as it readily reacts with water.
* Mass: A physical property that describes the amount of matter in an object. It doesn't involve chemical changes.
In Summary:
* Chemical Properties: Reactivity
* Physical Properties: Length, Color, Mass
