Define pure substances. How are they classified?

What are proteins? How are they classified? Give one example of each class.

What are analgesic medicines? How are they classified and when are these commonly used?

Define solubility of a substance.

Define specific heat of substance.Does it depend on pressure?

Define melting point of a substance.State the effect of pressure on it.

Based on molecular forces how polymers are classified? Write the type of bonds of forces present in between various monomer units in each class with example.

Define freezing point of a substance.

Define osmotic pressure. How can molar mass of a substance be determined from the measurement of osmotic pressure of a solution?

Show how the properties of a substance determine the diffusion rate.