Exam 3 - Pre-AP Chem - Shadrick

33 Questions | Total Attempts: 156

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Exam 3 - Pre-AP Chem - Shadrick - Quiz

An exam covering electrons in atoms, periodic properties, ionization, the mole concept, and the kinetic-molecular theory.


Questions and Answers
  • 1. 
    In which of the following states of matter can the molecules be compressed to a smaller volume?
    • A. 

      Solid

    • B. 

      Liquid

    • C. 

      Gas

    • D. 

      Liquid AND gas

  • 2. 
    According to the kinetic-molecular theory, particles of matter are in motion in
    • A. 

      Gases only

    • B. 

      Gases and liquids

    • C. 

      Solids, liquids, and gases

    • D. 

      Solids only

  • 3. 
    If there are 760 mm Hg in 1 atmosphere, convert the pressure 0.75 atm to mm Hg.
    • A. 

      1013 mm Hg

    • B. 

      430 mm Hg

    • C. 

      570 mm Hg

    • D. 

      760 mm Hg

  • 4. 
    What instrument measures the pressure of an enclosed gas?
    • A. 

      Barometer

    • B. 

      Manometer

    • C. 

      U-tube

    • D. 

      Torrometer

  • 5. 
    Convert the pressure 1.30 atmospheres to kilopascals.  Remember that 1 atm = 101.3 kPa.
    • A. 

      2 kPa

    • B. 

      115 kPa

    • C. 

      132 kPa

    • D. 

      245 kPa

  • 6. 
    How many moles are in 4.8 x 1025 atoms of W?
    • A. 

      797 mol

    • B. 

      79.7 mol

    • C. 

      0.13 mol

    • D. 

      0.013 mol

  • 7. 
    How many molecules are in 2.10 mol CO2?
    • A. 

      2.87 x 1024 molecules

    • B. 

      3.79 x 1024 molecules

    • C. 

      3.49 x 10-24 molecules

    • D. 

      1.26 x 1024 molecules

  • 8. 
    What is the mass of one mole of AuCl3?
    • A. 

      96 g

    • B. 

      130 g

    • C. 

      232.5 g

    • D. 

      303.6 g

  • 9. 
    What is the number of moles in 432 grams of Ba(NO3)2?
    • A. 

      0.237 mol

    • B. 

      0.605 mol

    • C. 

      1.65 mol

    • D. 

      3.66 mol

  • 10. 
    What period of elements on the Periodic Table tends to have the highest ionization energy?  the lowest?
    • A. 

      1, 7

    • B. 

      7, 1

    • C. 

      2, 3

    • D. 

      18, 1

  • 11. 
    In this diagram, what is the first ionization energy for sodium?
    • A. 

      496 kJ/mol

    • B. 

      521 kJ/mol

    • C. 

      738 kJ/mol

    • D. 

      899 kJ/mol

  • 12. 
    Which of the following ions does NOT have an octet?
    • A. 

      Al3+

    • B. 

      Cl-

    • C. 

      Mg2+

    • D. 

      O-

  • 13. 
    How does a nitrogen atom most commonly achieve an octet of electrons?
    • A. 

      By gaining 5 electrons

    • B. 

      By gaining 3 electrons

    • C. 

      By losing 5 electrons

    • D. 

      By losing 3 electrons

  • 14. 
    What charge does the atom in this diagram have?
    • A. 

      -1

    • B. 

      +2

    • C. 

      +1

    • D. 

      +3

  • 15. 
    How does the atomic radius change from top to bottom in a group in the Periodic Table?
    • A. 

      It tends to decrease.

    • B. 

      It tends to increase.

    • C. 

      It first increases, then decreases.

    • D. 

      It first decreases, then increases.

  • 16. 
    Which element in the second period has the largest atomic radius?
    • A. 

      Ra

    • B. 

      Li

    • C. 

      K

    • D. 

      Ne

  • 17. 
    Which of the following elements has the smallest atomic radius?
    • A. 

      S

    • B. 

      Cl

    • C. 

      Se

    • D. 

      Br

  • 18. 
    Of the following elements, which has the lowest electronegativity value?
    • A. 

      Cs

    • B. 

      At

    • C. 

      Ca

    • D. 

      F

  • 19. 
    Of the following elements, which has the highest electronegativity value?
    • A. 

      Li

    • B. 

      C

    • C. 

      Br

    • D. 

      F

  • 20. 
    Which of the following factors contributes to the decrease in ionization energy within a group in the periodic table, as the atomic number increases?
    • A. 

      Increase in atomic size

    • B. 

      Increase in the number of neutrons

    • C. 

      Increase in the number of protons

    • D. 

      Fewer electrons in the highest occupied energy level

  • 21. 
    One atom of argon would have a mass of how many grams?
    • A. 

      39.9 g

    • B. 

      2.40 x 10-25 g

    • C. 

      6.63 x 10-23 g

    • D. 

      1.66 x 10-24 g

  • 22. 
    Which of the following is NOT a part of the Kinetic-Molecular Theory?
    • A. 

      All gases are composed of particles.

    • B. 

      Atoms cannot be created or destroyed in a chemical reaction.

    • C. 

      Molecules undergo completely elastic collisions.

    • D. 

      Molecules and atoms are constantly moving, except at absolute zero.

  • 23. 
    Which of these statements about elastic collisions is true?
    • A. 

      The average distance between particle collisions is called mean free path.

    • B. 

      In an elastic collision, the colliding objects fuse together and stop moving.

    • C. 

      Two cars crashing in a parking lot is an example of an elastic collision.

  • 24. 
    In this diagram, the height difference in the two columns of mercury is 100 mm.  If the measured atmospheric pressure is 760 mm Hg, what is the pressure of the contained gas?
    • A. 

      100 mm Hg

    • B. 

      660 mm Hg

    • C. 

      760 mm Hg

    • D. 

      860 mm Hg

  • 25. 
    In this diagram, the gas has a fixed pressure of 700 Torr.  In the difference between the two columns of mercury measures 100 mm, calculate the current atmospheric pressure.
    • A. 

      800 Torr

    • B. 

      700 Torr

    • C. 

      600 Torr

    • D. 

      100 Torr

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