Question

please give me answer it is very important question ​

Answer 1

Give two examples of physical change which are not reversible

Answer

Folding/Crushing of paper.

Melting of ice.

The melted ice cube may be refrozen, so melting is a reversible physical change. Physical changes that involve a change of state are all reversible. Other changes of state include vaporization (liquid to gas), freezing (liquid to solid), and condensation (gas to liquid). Dissolving is also a reversible physical change

Burning, cooking, rusting, and rotting are examples of chemical changes. Ans: A chemical transition, also known as a chemical reaction, is a process that transforms one or more substances into one or more new and different substances.

Answer 2

sorry couldn't understand