Define Chemical change and explain with example.

1.	Define Chemical change and explain with example.
Answer» Chemical change: - is a change in which one or more new substances are formed. In a chemical change— i) New substances are formed. ii) Energy changes are involved. iii) There is a change in mass during the reaction. iv) Permanent change takes place. Examples – i) Cooking of food ii) Rusting of iron iii) Heating of Lead nitrate iv) Souring of milk v) Ripening of fruit

Answer»

Chemical change: - is a change in which one or more new substances are formed.

In a chemical change—

i) New substances are formed.

ii) Energy changes are involved.

iii) There is a change in mass during the reaction.

iv) Permanent change takes place.

Examples –

i) Cooking of food

ii) Rusting of iron

iii) Heating of Lead nitrate

iv) Souring of milk

v) Ripening of fruit

Discussion