Question

Distinguish between physical and chemical change ​

Answer 1

$\huge \tt ☘\:Chemical \: change$

• This is the process in which we combines or add two substances to form new substance.
• This is non Reversible change.
• In this new substances are form.
• It changes it's colour , size and it's change its temperature after combining.
• For Examples:- Souring of milk , Rusting of iron and baking of cake.. etc.

$\huge \tt ☘\:Physical \: change$

• This is used to separate mixtures from compound.
• This is the process in which no new substances are from.
• This is Reversible change.
• It changes it's size and shape.
• For examples :- Melting of ice , chopping wood and mixing sand in water...etc.

Answer 2

Physical change

• This is non Reversible change.
• A physical change is a temporary change in which no new substance
• A change in matter which does not alter the chemical properties of the matter.
• Melting is a physical change because it involves the changing of matter from a solid state into a liquid one, without any change in the chemical..

Chemical change

• A chemical change is a permanent change in which new kind of substances are formed
• A chemical change is a change of materials into another, new materials with different properties
• The oxidation reaction is a chemical change example that causes a chemical reaction.