Question

a chemical property can only be observed after a reaction has occurred. false true rewatch

Explanation:

Chemical properties describe a substance's ability to undergo a chemical change or reaction. To observe these properties, the substance must undergo a chemical reaction (or the process of reacting) so the change in composition or characteristic can be seen. For example, flammability is a chemical property that can only be observed when a substance burns (a chemical reaction).

Answer:

True