Question

A student learns that the bending of metallic wire is a reversible change. Why is it considered as a reversible change? *

Answer 1

$\sf\large\underline\purple{AnswEr:-}$

The bending of metallic wire is reversible change. Because the bending of metallic wire can be reversed in its original form again that's why it is considered as a reversible change.

$\sf\large\underline\purple{Explaination:-}$

As you know that in reversible change no new substance formed. It can be reversed. Yes it's true that for sometimes a matter change its original property but it can be reversed again in its own orginal form. I will explain you by giving an example of reversible change. A liquid change into solid form on freezing or cooling. water is a liquid and it is changed into solid form which it is freezed. But as it is left in open area then it is reversed and comes again in its original form.

$\sf\small\underline\purple{To\: know\: about\:some\:more\:change:-}$

$\sf\large\underline\purple{Physical\:change:-}$

A chance in which no new substance formed they are called physical changes. It can be reversed for example melting of ice.

$\sf\large\underline\purple{Chemical\:change:-}$

A chance in which new substance formed. It can't be reversed again if it once convert then it can't be reversed again in its original property. Example of chemical changes are burning of wood, burning of paper, spoiling of food, ripening of fruits.

$\sf\large\underline\purple{Fast\:change:-}$

A chance in which the substance takes a minute ,an hour to change they are called slow change. Example of slow change is tearing a paper.

$\sf\large\underline\purple{Slow\:change:-}$

A chance in which the substance takes a month, a year to change they are called fast change. Example of fast change is growing of trees, rusting of iron etc.

Answer 2

The bending of metallic wire is reversible change. Because the bending of metallic wire can be reversed in its original form again that's why it is considered as a reversible change.