Please note that the following questions have only three choices.

1.    As the pressure on a gas increases, the volume occupied by that gas tends to
       (1.) increase  (2.) decrease  (3.) remain the same

2.    As the temperature on a gas increases, the volume occupied by that gas tends to
       (1.) increase  (2.) decrease  (3.) remain the same

3.    Changes in which new kinds of matter are produced are called  (1.) chemical changes
       (2.) physical changes  (3.) nuclear changes  (4.) pressure changes

4.    All matter possesses  (1.) physical properties only     (2.) chemical properties only
       (3.) sometimes chemical and sometimes physical properties  (4.) physical and
       chemical properties at all times

5.    In which state of matter do the molecules tend to be moving the most rapidly and
       are the furthest apart?   (1.) solid  (2.) liquid  (3.) gas

6.   In which state of matter do the molecules exist closest together but are free to move around?
      (1.) solid  (2.) liquid  (3.) gas

Use the listing of choices below to answer questions 7 through 12 which follow.
Associate the letter corresponding to the correct answer to each statement relating to a phase change.

(A.)   sublimation
(B.)   condensation
(C.)   evaporation
(D.)   freezing
(E.)   melting

7.    This phase change goes from the gas to the liquid state.
8.    This phase goes from the solid to the liquid state.
9.    This phase goes from the solid directly to the gas phase.
10.  This phase goes from the liquid to the solid state.
11.  This phase goes from the liquid to the gas phase.

12.  The high energy phase of matter associated with stars is called  (1.) solid  (2.) liquid  (3.) gas
       (4.) plasma

13.  During the a cold winter day in Degrasse, a car gets a coating of frost.   The temperature never gets
       above -4 F (-20 C) during the day, yet the frost on the car disappears.   Which change of phase
       most likely resulted in the frost leaving the car?   (1.) melting  (2.) evaporation  (3.) condensation
      (4.) freezing  (5.) sublimation

14.  Which is an example of a chemical change?  (1.) The splitting of wood.   (2.) The tearing of paper.
       (3.) The souring of milk.  (4.) The melting of ice.

15.  Which process would add heat energy to the environment?   (1.) sublimation  (2.) melting
       (3.) condensation   (4.) evaporation

True/False Section:   Characterize the following statements as being either true or false.

1.   Examples of chemical changes include freezing, boiling, evaporation, tearing, and crushing.

2.   Mixtures are physical combinations of materials and can be separated by physical means.

3.   Characteristic properties can be used to identify different materials, and separate
      a mixture of substances into its components.

4.   A magnetic substance can be removed from a mixture by means of a magnet.

5.   Color, shape, taste, odor, hardness, and density are examples of chemical properties of matter.

Short Answer Section
 
1.   Identify the liquid, solid, and gas states of matter on the phase change diagram below.

2.   Identify the melting, evaporation (boiling), condensation, and freezing phases on the phase change diagram below.

 
 
 
3.   Imagine a classroom containing 20 students.    Describe the positioning and movement of the students in this classroom if they were to represent the gas, liquid, and solid states of matter. 

4.   Explain the difference between a physical property and a chemical property.

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Please send any questions or comments to jbuckley@northnet.org