In humans, the calcaneus (/kaelËkeÉªniËÉs/ ; kÃ¦lËkeÉªniËÉs from The latin calcaneus or, calcaneum meaning) heel or heel bone is a bone of the tarsus of the foot which constitutes the. heel
1 Intensive properties, such as density and color, do not depend on the amount of the substance present. 2  Physical properties can be measured without changing a substance's chemical identity.  Chemical properties can be measured only by changing a substance's chemical identity.
With chemical properties the chemical identity of the substance is changed, this is not the case with physical properties. With chemical properties the structure of the material changes, while the structure does not change in the case of physical properties. A chemical reaction occurs before a chemical property becomes evident, while no chemical reaction is needed for a physical property to become visible. Chemical properties, unlike physical properties, can be used to predict how substances will react. Table comparing physical and chemical properties