Name: ________________________
Chemistry 100, Section A
Quiz 1
Friday, August 29, 1997
1. What is the difference between basic and applied research? (4 pts)

2. We discussed several difficulties and limitations of the scientific method on Wednesday. What are three of these? (6 pts)

Quiz 2
1. What is an element? (3 points)

2. List three of the five main branches of chemistry. (3 points)

3. What does it mean for a chemical equation to be balanced? (4 points)

Quiz 3
1. Balance the following chemical equations or, if they are correct as written, indicate that they are already balanced. (4 points)

     C6H12O6 ----> CH3CH2OH + CO2

     2 SO2 + O2 ----> 2 SO3

2. Indicate which elements are present in the following molecule by listing their symbol or name. (5 points)

     ZnCu(C2H4O2)4

3. How many atoms of carbon are in the molecule C63H88CoN14O14P? (1 point)

Quiz 4
1. What does the periodic law state? (3 points)

2. Indicate the location of the metals and nonmetals on the modern periodic table. (3 points)

3. Name two groups of the periodic table. (4 points)

Quiz 5
1. Describe the periodic trend for electronegativity. (2 points)

2. Describe the periodic trend for atomic size. (2 points)

3. Radium (Ra) is a radioactive element which has never been characterized chemically. If radium reacts with chlorine, what would you predict the molecular formula to be? (3 points)

4. What are the properties of an alpha (a) particle? (3 points)

Quiz 6
1. Indicate which intermolecular forces are present in the following molecules. (3 points)
               London Force          Dipole-Dipole interaction    Hydrogen Bond
     CH4        ____________          ____________          ____________
     CH2F2     ____________          ____________          ____________
     BCl3        ____________          ____________          ____________

2. Explain the following postulate of the kinetic-molecular theory: The distance between particles increases as the temperature increases. (3 points)

3. Explain what is meant by a London force. (3 points)

4. Why can we not compress a solid? (1 points)

Quiz 7
1. What is vapor pressure? (2 points)

2. Which one of the following three molecules would be most likely to be a gas at room temperature? (2 points)

     NaCl     CH3-CH3     NH3

3. Sterling silver is made up of 7.5% copper and 92.5% silver. Indicate which of these is a solvent and which is a solute. (3 points)

4. Indicate whether the following molecules should be soluble in water. (3 points)

     NaCl     CH3-CH3     NH3

     ______     ______     ______

Quiz 8
1. How many moles are in 152 g H2O? (4 points)

2. What is the molar mass of NH4Cl? (2 points)

3. How many grams does 2 moles of glucose, C6H12O6, weigh? (4 points)

Quiz 9
1. Which of the following substances is most acidic? (2 points)
     a. Cows milk, pH 6.3     b. Household ammonia, pH 10.5
     c. Gastic fluid, pH 1.5     d. Vinegar, pH 2.4

2. What is the definition of molarity? (3 points)

3. How many grams of citric acid (C6H8O7) would you use to make 1.0 L of 3.25 M citric acid? (5 points)

Quiz 10
1. How many carbon-carbon and how many carbon-hydrogen bonds are there in two moles of C6H14? (4 points)

2. What is the difference between an alkane and an alkene? (2 points)

3. In the following molecule, classify each carbon as a primary (1o), secondary (2o), tertiary (3o) or quaternary (4o) carbon. (4 points)

Quiz 11
1. Name the following molecules. (6 points)

2. What type of molecule is the following molecule? (2 points)

3. Which of the following molecules would have the highest boiling point? (2 points)

     CH3-CH3     CH3CH2OH     CH2=CH2

Please send your comments and suggestions to: twiese@fhsu.edu
Last Modified Augst 14, 2000

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