Question

Properties of a substance which can be measured or observed without altering the identity of the substance being measured are _____.

physical properties
chemical properties
reactive properties
phase properties

Answer 1

I think the answer is physical properties.

Answer 2

Answer:

Physical properties.

Explanation:

The properties of a substance which can be measured or observed without altering the identity of the substance must be physical properties.

For example if we are heating water sample from room temperature to higher temperature (below the boiling range) the water will get heat up however there will be no change in identity of the water.

In other cases like:

Chemical properties : there may be change in the identity of the substance as it may react with another substance to produce a new substance.

Reactive properties : they are again like chemical properties

phase properties : there are certain phase changes where the identity of substance gets changed. For example the rhombic sulfur changes to monoclinic sulfur.