Question

define the following terms
1. physical change
ans =
2. chemical change
ans =​

Answer 1

Physical change -The channge in which no new substances are formed..

Ex-Melting of ice

Chemical change -The change in which new substances are formed..

Ex-Burning of paper

Answer 2

$\large\pmb{\frak\pink{Physical~ Change}}$

• It is a temporary change.

• It is a reversible change because its again chang into same state or different state.

• In physical change only physical properties change like state, colour, smell etc.

• In physical change no new substance are formed.

• There is no change in energy.

• Mass of the substance does not change.

$~$

$\large\pmb{\frak\pink{Chemical~Change}}$

• It is a permanent change.

• It is not reversible change.

• In chemical change both physical and chemical properties are change.

• In chemical change new substance are formed.

• There are always change of energy.

• Mass of the substance change.