1. Using ice, carbon dioxide, mercury and NaCl, show which among them is denser in solid state than in liquid and gaseous state.

2. Describe a crystalline solid in terms of homogeneous and anisotropic.

3. What is an isomorphous and polymorphous substance?

4. Quartz is amorphous solid. Explain.

5. Why are amorphous solids super cooled liquids?

6. Crystalline solids melts at a definite, sharp melting points. Explain.

7. General solids are incompressible. Explain.

8. What is the repeated structural unit of a crystalline?

9. Short range order is present in amorphous solids. Explain.

10. What are the two polymorphic forms of sulphur?