Day 3 skills review

DAY 3, Terms to know:

Sections 13.7, 14.1-14.3 colloid, hydrophilic, hydrophobic, surfactant, spontaneous process, nonspontaneous process, entropy, standard entropy, change in entropy, translational motion, vibration motion, rotational motion

DAY 3, Specific outcomes and skills that may be tested on exam 1:

Sections 13.7, 14.1-14.3

• Be able to describe what a colloid is and how their molecular structure affects their physical properties in suspension
• Be able to describe how surfactants work on a molecular level and how that results in macro-scale properties
• Be able to apply the terms spontaneous and nonspontaneous appropriately recognizing that they are thermodynamic terms and are independent of kinetics or rate of reaction.
• Be able to explain why exothermic processes are often spontaneous and under what condition they might not be spontaneous.
• Be able to describe what entropy is and what factors affect entropy and how those factors affect entropy.
• Given two different sets of conditions for a substance, be able to describe which has a higher entropy and why.
• Given two different substances or given a chemical reaction, be able to describe which has greater entropy and why and whether the over entropy change has a + or – sign.
• Be able to explain how the number of moles, state of matter, temperature, molar mass, molecular complexity, and molecular mobility affect entropy for a substance and why.
• Given standard entropies, be able to calculate the change in entropy for a process.

Complete these problems outside of class until you are confident you have learned the SKILLS in this section outlined on the study guide and we will review some of them next class period. 13.99  13.119  13.123  13.127  VC14.1  VC14.2  VC14.3  14.15  14.17