The Concept of Soft Materials and Their Characteristics

Soft materials can be described has having a large response function they deform readily under external stimuli. Look around you and identify some soft materials. How many of the materials around you are crystalline solids  

Rubber bands are made from a stretchy polymer material. If a section of a rubber band with an unstretched cross-sectional area of 0.4 mm will increase in length by 50% under an extension force of 15 N, calculate its Young s modulus. How does the value you obtain compare to typical Young s moduli for solid metals or ionic crystals (e.g., sodium chloride)  

Give some examples of non-Newtonian fluids in everyday life. Would you consider these materials soft matter Explain your answer. 

Estimate the temperature at which water boils at the top of Mount Everest if the air up there is one-third as dense as it is at sea level. 

What is the physical significance of the negative slope of the ice/liquid water phase boundary on the water phase diagram  

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