Answer:
Physical properties can be observed without changing the identity of a substance.
Step-by-step explanation:
The physical properties may be defined as the properties which can be measured. It refers to the measurable value of the object which describes the state of the physical system.
These properties can be observed, hence they are also known as observable properties. They are not modal properties.
Any change in the physical properties describes the changes between the momentary states. It can be observed without changing the identity of the object.