Give 2 eg of some material that may undergo reversible and irreversible change?
Answers
Hey mate here are some examples and explanation:-
1:-Reversible changes - 2:-Irreversible changes
1:-A substance can return to its original state. - 2:-A substance cannot return to its original state.
1:-The chemical properties of the substance do not change. - 2:-The chemical properties of the substance change.
1:-Most physical changes are reversible changes. - 2:-All chemical changes are irreversible changes.
1:-Examples of reversible changes:-
a:-Melting: Melting is when solid converts into a liquid after heating. Example of melting is turning of ice into water.
b:-Freezing: Freezing is when a liquid converts into a solid. Example of freezing is turning of water into ice.
2:-Examples of irreversible changes
a:-Burning: When we burn a piece of paper or wood, it turns to ash and smoke. We cannot obtain paper and wood from the ash again.
b:-Cooking: We use heat for cooking, right? Once we cook our eggs, we cannot uncook them. Therefore, cooking is an irreversible change.