Page 25 - CLass 9 Learning Outcome

Students should be able to differentiate between atoms and molecules, should be able to draw the electronic configuration of various elements ,the formation of ions,formation of compounds, finding out the molecular mass / formula unit mass ,and should be able to solve numericals based on mole concept.

1. State the laws of chemical combination.

2. State both the laws of chemical

combination with examples. 3. Analyse the importance and interdependence of both the laws of chemical combination on each other. 4. Relate the postulates of Dalton's atomic theory with the laws of chemical combination and Give explanation to the postulates of dalton's atomic theory which are being challenged now. 5. Differentiate between an atom and a molecule. 6. Write atomicity for similar and dissimilar elements. 7. Define unified mass, rela

1. State the laws of chemical combination. 2. Describe the laws of chemical combination. 3. Evaluate dalton's atomic theory with the present situation. 4. Understand atoms, molecules and atomicity. 5. Describe the role of unified Mass and Carbon - 12 as standard for reference. 6. Discuss various ions and using them for writing chemical formula. 7. Calculate Molecular Mass and Molar Mass. 8. Understand the significance of mol

Atoms & Molecules