CHEM101 Study Guide - Chemical Polarity, Sodium Silicate, Petroleum Ether

• School: University of Alberta
• Department: Chemistry
• Course: CHEM101
• Professor: Yoram Apelblat

Document Summary

You should be able to do q 1 5. Solutions to the midterm exam will be posted soon. You can pick it from my office w4-13 when i am there. Friday (nov 14) 11:00 12:00, 14:00 15:30. Friday (nov 21) 11:00 12:00, 14:00 15:30. Provided your exam was written in pen, write a short paragraph as to why you think you deserve more marks. Attach it to your paper and submit to me no later than. Your entire exam will be regarded and the score can go up, down or remain the same. When a drop of liquid spreads across a surface, we say the liquid wets the surface. Whether a drop of liquid wets the surface or retains its spherical shape, depends on: Cohesive forces = intermolecular forces between like molecules. Adhesive forces = intermolecular forces between different types of molecules. When cohesive > adhesive adhesive > cohesive retain shape liquid spreads out.