Prelab                                                       3
Study Question 1                                             3
Study Question 2                                             4
Study Question 3 (provide reactions diagrams)                2
Do NOT answer the extra study questions
                                          SUBTOTAL PRE-LAB: 12 points

Compare and contrast the dying results on cotton and wool.  
This discussion needs to include 
- drawings of "trimers" of cotton and wool, 
- discussions of the types of bonding (van der Waals, 
  dipole-dipole, H-bonding ...) between the dye and 
  cotton or wool, and 
- an explanation why one material takes the dye better 
  than the other.
                                         SUBTOTAL POST-LAB:  8 points