Question

Examples of physical change
and
chemical change ​

Answer 1

Answer:

Examples of chemical changes are burning, cooking, rusting, and rotting. Examples of physical changes are boiling, melting, freezing, and shredding. Often, physical changes can be undone, if energy is input.

Answer 2

$\huge\underline\bold\pink{Question\::-}$

➝Examples of physical change and chemical change?

$\huge\underline\bold\orange{Answer\::-}$

$\displaystyle\pink{\underline{\underline{Examples\:of\:physical\: changes}}}$

• Glowing of bulb

• Melting of butter

• Formation of cloud

• Melting of wax

• Heating of iron

$\displaystyle\purple{\underline{\underline{Examples\:of\:chemical\: changes}}}$

• burning of fuel

• change of milk into curd

• change of milk into cheese

• cooking of food

• burning of incense stick

${\purple{\boxed{\large{\bold{More\:About\:it}}}}}$

...Not only this changes may also be categorised on some other characteristics such as :-

$\:\sf\underline\red{Desirable\:change}\:$ :- The change which we want to occur is a desirable change. For example :- burning burning of kerosene oil in a stove.

$\:\sf\underline\orange{Undesirable\:change}\:$ :-

The change which we don't want to occur is called undesirable change. For example :- fire in a kerosene depot.

${\blue{\boxed{\large{\bold{Note}}}}}$ :- A change may be desirable at one time or to some persons ,but may be undesirable at other time or to other persons.

$\huge\star\:\:{\orange{\underline{\purple{\mathcal{Examples}}}}}$

☆ Desirable change

• burning of firewood in a chulha.

• formation of curd from milk

• change of cow - dung into biogas.

☆Undesirable change

• forest fire and burning of wood

• spoilage of milk and changing into curd

• breaking of glass tumbler