Question

The making of a ring from gold is ______ change and making a statue from wood is ______ change.
A.Irreversible, reversible
B.Reversible, irreversible
C.Irreversible, irreversible
D.Reversible, reversible

Answer 1

We could tell the physical changes are changes in the state of matter without an accompanying composition change and a new substance is produced that have different properties and composition from the original material in a chemical change. Physical changes are reversible changes and chemical changes are not reversible changes.

Complete step by step answer:
Let us define reversible change as,
Reversible change: Any changes which could be reversed or a temporary conversion is known as reversible changes. The reactions which are reversible are known as reversible reactions. In this reaction, one substance is converted into another form but a new compound is not formed. Processes like melting, evaporation, freezing, condensation, dissolution, freezing are reversible changes.
We can discuss about the irreversible change as,
Irreversible change: Irreversible changes are permanent changes. Reactants react with one other to produce a new compound and cannot be obtained again. Processes of Heating, mixing, burning, powdering are some of the examples that cause irreversible changes. The cooking of raw egg which couldn’t be converted back to its original form is an example of irreversible change.
The making of a ring from gold is an example of reversible change because it involves a physical process which is nothing but melting. Once gold ornaments are made from gold, they can be brought back to gold so it is reversible change.
The making of statues from wood is an example of irreversible change because we cannot join back pieces of status to make a big wood log.
An example of reversible change is making a ring from gold and an example of irreversible change is making a statue from wood.

So, the correct answer is Option B.

Note: We can say chemical changes are of two types. They are reversible and irreversible changes. In reversible change, there is a change in physical properties, shape, and size of the material. Folding of paper, spring elongation are some examples of reversible changes. When a piece of wood is burned to ash, it cannot be made to wood again. This is an example of irreversible change.