No grade for this. However you should keep a pencil and paper nearby to record topics that you will need help with. Plan to ask those questions between now and the exam.

1. Describes a solid state.

   1.   ?    Fixed volume.
      Variable shape.
      Phase change with both increase and decrease in temperature.
   2.   ?    Fixed volume.
      Fixed shape.
      Phase change only with increase in temperature.
   3.   ?    Variable volume.
      Variable shape.
      Phase change only with decrease in temperature.
   4.   ?    Indeterminate volume (it's hard to give it a boundary).
      Indeterminate shape.
      Electrically charged particles.

2. Describes a liquid state.

   1.   ?    Fixed volume.
      Variable shape.
      Phase change with both increase and decrease in temperature.
   2.   ?    Fixed volume.
      Fixed shape.
      Phase change only with increase in temperature.
   3.   ?    Variable volume.
      Variable shape.
      Phase change only with decrease in temperature.
   4.   ?    Indeterminate volume (it's hard to give it a boundary).
      Indeterminate shape.
      Electrically charged particles.

3. Describes a gaseous state.

   1.   ?    Fixed volume.
      Variable shape.
      Phase change with both increase and decrease in temperature.
   2.   ?    Fixed volume.
      Fixed shape.
      Phase change only with increase in temperature.
   3.   ?    Variable volume.
      Variable shape.
      Phase change only with decrease in temperature.
   4.   ?    Indeterminate volume (it's hard to give it a boundary).
      Indeterminate shape.
      Electrically charged particles.

4. Describes a plasma state.

   1.   ?    Fixed volume.
      Variable shape.
      Phase change with both increase and decrease in temperature.
   2.   ?    Fixed volume.
      Fixed shape.
      Phase change only with increase in temperature.
   3.   ?    Variable volume.
      Variable shape.
      Phase change only with decrease in temperature.
   4.   ?    Indeterminate volume (it's hard to give it a boundary).
      Indeterminate shape.
      Electrically charged particles.

5. Choose (ALL) the qualitative observations from the list below.

   1. The copper reacted with the concentrated nitric acid to produce bubbles and a cloud of brown gas.
   2. 6.54 grams of copper remained after the series of reactions was completed.
   3. The solution of copper(II)nitrate absorbed strongly at 485 nm when placed in a spectrometer.
   4. A dense gray-black precipitate of Copper(II)oxide formed when the copper(II)hydroxide was heated.
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6. Use all lower case. Separate each answer by a comma and a space. Do not place periods after the abbreviations. List ALL the metric prefixes in order from smallest to largest between 1/1000 and 1000.

   
   
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7. Use all lower case. Separate each answer by a comma and a space. Do not place periods after the abbreviations. List ALL the "official" metric prefixes in order from smallest to largest between 1/1,000,000,000 and 1,000,000,000.

   
   
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8. Classify as a chemical or physical change -- water is evaporated from saltwater, leaving behind crystals of salt.

   1.   ?    physical
   2.   ?    chemical

9. Classify as a chemical or physical change -- a suspended precipitate is removed from a water - solid system by filtration.

   1.   ?    physical
   2.   ?    chemical

10. Classify as a chemical or physical change -- acid is added to a solution made from boiling purple cabbage leaves. The solution changes in color from blue to green.

    1.   ?    physical
    2.   ?    chemical

11. Explain the relationship between dependent variables, independent variables, controlled variables.

    1.   ?    The dependent variable changes because the independent variable is purposefully changed. The controlled variables vary randomly.
    2.   ?    The independent variable changes because the dependent variable is purposefully changed. The controlled variables vary randomly.
    3.   ?    The dependent variable changes because the independent variable is purposefully changed. The controlled variables are not permitted to change.
    4.   ?    The independent variable changes because the dependent variable is purposefully changed. The controlled variables are not permitted to change.

12. What's the difference between accuracy and precision?

    1.   ?    There is no difference. The two terms are synonyms.
    2.   ?    accuracy refers to closeness to some accepted value. precision refers to the nearness of members of the same repeated measurement to each other
    3.   ?    precision refers to closeness to some accepted value. accuracy refers to the nearness of members of the same repeated measurement to each other

13. Convert -40 C to K.

    1.   ?    32 K
    2.   ?    233 K
    3.   ?    313 K
    4.   ?    215 K

14. What distinguishes a homogenous mixture from a heterogeneous mixture?

    1.   ?    A heterogeneous mixture is uniform while a homogenous mixture reveals distinct "phases" or parts.
    2.   ?    A homogeneous mixture is uniform while a heterogeneous mixture reveals distinct "phases" or parts.
    3.   ?    There is no difference.

15. What type of mixture is a solution?

    1.   ?    Solutions are heterogeneous mixtures.
    2.   ?    Solutions are homogeneous mixtures.
    3.   ?    Solutions show a hybrid of heterogeneous and homogeneous features.

16. How many significant figures in: 4.008 m

    
    
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17. How many significant figures in: 4.3380 m

    
    
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18. How many significant figures in: 0.00890 m

    
    
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19. Multiply: .003 m x 12 m (omit units from your answer)

    
    
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20. Add: 1.225 m + 0.230 m + 71.6 m= (omit units from your answer)

    
    
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