Chapter 4

Chapter # 4

1. Why HF is weaker acid than HCl , HBr, and HI ?

2. Write two applications of liquid crystals?

3. Differentiate between isomorphism and polymorphism?

4. Ionic crystals are highly brittle explain?

5. Evaporation cause cooling explain?

6. Water and ethanol can mix together in all proportion explain?

7. Define lattice energy give example?

8. Metallic crystal are lustrous in nature why?

9. Define transition temperature give example?

10. Differentiate between amorphous and crystallin solids?