Question

4. Why the Study/ Checking chemical and physical properties of daily used substances
material is essential ​

Answer 1

Explanation:

Extensive properties, such as mass and volume, depend on the amount of matter being measured. Intensive properties, such as density and color, do not depend on the amount of the substance present. Physical properties can be measured without changing a substance's chemical identity.

2.Physical properties can also be used to determine the freezing or boiling pont of an object(it can determine the freezing point of water).