Answer:
The ability to be maintained at a certain rate or level
Explanation:
Metals are elements that are generally shiny when smooth and clean
Brainest please thank you
Explanation:
when an iron bar rust is an example of a chemical change in which a new substance is formed and the change is not easily reversible.for iron to rust moisture and air must be present.while when a substance freezes,it can be easily reversed through melting and no new substance is formed.this change is termed a physical change.
