To identify that a can or a container is metallic, it is necessary to look at the physical properties of the metal, for example, that it has good conductivity of electricity or heat.
A metal is a term that refers to a set of chemical elements that are characterized by:
According to the above, we can infer that to verify that a container is metallic we can use it as a conductor of heat or electricity.
Note: This question is incomplete because there are some information missing. However I can answer it based on my general knowledge.
Learn more about metals in: https://brainly.com/question/4701542