Question

All substances have characteristic properties. If one of these properties can be observed without changing the identity of the substance, it must be a chemical property. biological property. universal property. physical property.

Answer 1

It must be physical property, since it can only change in appearance not the make of it.

Answer 2

All substances have characteristic properties. If one of these properties can be observed without changing the identity of the substance, it must be a physical property. That is because it deals with only appearance, and NOT chemical bonds etc.