Question

Must new substances be formed when you observe a chemical property? Explain.

Answer 1

When a chemical change occurs, a new substance forms (I.e., hydrogen and oxygen reacting to make water). Chemical properties, on the other hand, are qualities of a atom or molecule (I.e., how conductive it is, how hard it is, melting point). Chemical properties do not make new substances on their own---a chemical change is necessary.

Answer 2

Yes. The Definition of a chemical property is a property in which a substance has a potential to change identity under certain circumstances in that manner of chemical change. If this substance changes identity, then new substances are produced from the matter that was changed.