How to Prepare for Unit Exam 1
The unit test will consist of similar types of questions as in “Unit 1 Review” which covers chapters 12,
13, & 14, Intermolecular forces and Liquids, The Solid State, and Solutions, respectively. This is a graded
homework assignment, but you can also use it to prepare and practice for the exam. The more you
practice, the better you will be prepared for the test.
After you have studied and completed the Unit 1 Review assignment, then go to “Assignments I Can
Practice Now” to practice similar questions. You can practice the Unit Review Assignment questions as
much as you like.
Your exam will be administered during our scheduled lecture meeting. You will be able to use a
calculator, formulas (I will provide), and scratch paper.
Utilize the study guide questions below to help you prepare for the exam (you should also use your
notes, lecture videos, and eBook.)
Conceptual Questions to consider (USE your textbook (eBook) & Notes to confirm answers)!
oWhy are intermolecular forces (IMFs) important?
oWhat are the main properties of liquids (in contrast to gases and solids)?
oWhat factors cause transitions between the solid and liquid state? The liquid and gas state?
oDescribe the relationship between the sate of a substance, its temperature, and the strength of its
intermolecular forces.
oFrom what kinds of interactions do intermolecular forces originate?
oWhat is the dispersion force? What does the magnitude of the dispersion force depend on? How can
you predict the magnitude of the dispersion force for closely related elements or compounds?
oWhat is the dipole-dipole force? How can you predict the presence of dipole-dipole forces in a
compound?
oHow is the miscibility of two liquids related to their polarity?
oWhat is hydrogen bonding? How can you predict the presence of hydrogen bonding in a compound?
oWhat is the ion-dipole force? Why is it important?
oExplain what happens in the processes of vaporization and condensation. Why does the rate of
vaporization increase with increasing temperature and surface area?
oWhy is vaporization endothermic? Why is condensation exothermic?
oHow is the volatility of a substance related to the intermolecular forces present within the substance?
oWhat is the heat of vaporization for a liquid and why is it useful?
oExplain the process of dynamic equilibrium. How is dynamic equilibrium related to vapor pressure?
oHow is vapor pressure related to temperature? What happens to the vapor pressure of a substance
when the temperature is increased? Decreased?
oDefine the terms boiling point and normal boiling point.
oWhat is the Clausius-Clapeyron equation and why is it important?
oExplain what happens to a substance when it is heated in a closed container to its critical temperature.
oWhat is sublimation?
oWhat is fusion? Is fusion exothermic or endothermic? Why?
