a characteristic property is a property of matter that. changes slowly over time, does not change, cannot be know

A characteristic property is a property of matter that does not change.

Explanation:

For classifying the substance, the physical and chemical property is the main key so these physical and chemical property is known as the characteristic property. Even if the amount, appearance and shape of matter is changed the characteristic property always remain same. The characteristic property of matter is analogous to the DNA of living organism. The characteristic property can be determined without any chemical processing.