Ch 10 test Dec 1st

Chapter 10 Review

 

--Make sure that you read the chapter and know all vocab words.

 

--Know the properties of a gas vs. a liquid vs. a solid.  

 

--You need to understand kinetic-molecular theory and understand an ideal gas vs. a non-ideal gas. (molecules take up no space and all collisions are elastic)

 

--KE = 1/2mv² know this equation and understand what the velocity of a particle means in terms of energy.  (velocity and KE are directly proportional)

 

--Know that increasing temperature requires energy (absorbs), and decreasing temperature releases energy.  This is because of KE = 1/2mv².  The particles are moving faster (higher velocity) as they increase in temperature, so they have more energy.

 

--Know all of the areas of a phase diagram and be able to tell what phase a compound is in depending on the temperature and pressure.

 

--Understand the difference between boiling and evaporating.  Evaporation occurs because some molecules have enough energy/velocity to become a gas.  As temperature goes up more molecules have enough energy until all the temperature is high enough for all molecules to have enough energy so the liquid then boils.  (figure 15 p.345)

 

--Boiling/condensation and melting/freezing occur at constant temperature.   

 

--Be able to explain why compounds boil at different temperatures. (size and polarity) 

 

--Understand the properties of water.  It boils at an extremely high temperature for its size and ice is less dense than water.  (section 5)

 

--Be able to determine if a molecule is polar or nonpolar.  Understand how and why polarity affects the boiling point. 

 

--If I talked about it or it is in the book then it could be on the test.