Question

A copper vessel is an example of
material
fill in the blanks​

Answer 1

Explanation:

HEY MATE.......

The presence of reactants in a closed vessel made up of copper is an example of a closed system.

USES OF COPPER VESSEL:

Copper vessels are used in some areas without access to clean running water, where drinking water needs to be stored for long periods of time. This reduces the possibility of the liquid being contaminated with bacteria.