CBSE Notes for Atoms and Molecules Class 9 Extra Questions
- The process of combining two or more elements to form new compounds is governed by the laws of chemical combination, they are of two types
- Law of conservation of mass
- Law of constant proportion
- Dalton’s atomic theory states that all matter is composed of small particles called atoms. Please refer Atoms and Molecules Class 9 Extra Questions for more information.
CBSE Revision Notes 