physical and chemical changes
por Jaimini Ram
1. intro
1.1. all substances go under some changes
1.1.1. there are two kinds of changes
1.1.1.1. physical changes
1.1.1.1.1. definition
1.1.1.1.2. characteristics
1.1.1.1.3. experiment
1.1.1.1.4. example
1.1.1.2. chemical changes
1.1.1.2.1. definition
1.1.1.2.2. charecteristics
1.1.1.2.3. experiment
1.1.1.2.4. example