Chemistry B Quiz 4 Of 4

35 Questions | Total Attempts: 969

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Chemistry B Quiz 4 Of 4

This is the last Chemistry prep quiz before the End of trimester exam tomorrow.


Questions and Answers
  • 1. 
    Which of the following includes an example of a chemical property of an element?
    • A. 

      Aluminum is a solid at room temperature and is a poor thermal insulator.

    • B. 

      Sulfur is not shiny and is not malleable.

    • C. 

      Sodium is a solid at room temperature and reacts with other elements.

    • D. 

      Silicon is shiny and is a poor conductor of electricity.

  • 2. 
    • A. 

      A Thermal energy → kinetic energy

    • B. 

      B Kinetic energy → potential energy

    • C. 

      C Chemical energy → thermal energy

    • D. 

      D Potential energy → chemical energy

  • 3. 
    • A. 

      Nuclear fusion is occurring because many smaller nuclei are being fused.

    • B. 

      Nuclear fission is occurring because large amounts of energy are being absorbed.

    • C. 

      Nuclear fusion is occurring because many energetic neutrons are being emitted.

    • D. 

      Nuclear fission is occurring because a nucleus is being split into smaller nuclei.

  • 4. 
    • A. 

      They consist of barium chloride anhydrous.

    • B. 

      They consist of barium chloride dihydrate.

    • C. 

      They consist of barium chloride hexahydrate.

    • D. 

      They consist of barium chloride heptahydrate.

  • 5. 
    Heart cells require a certain balance of sodium and potassium ions to function. The blood, which is approximately 83% water, carries these two types of ions to the heart. The property of water that allows it to carry ions to the heart is its —
    • A. 

      Molecular mass

    • B. 

      Specific heat

    • C. 

      Polarity

    • D. 

      Density

  • 6. 
    The equation below represents a chemical reaction that produces a gas. 2Na(s) + 2H O(l) → 2NaOH(aq) + H (g) 22 What is the theoretical yield in liters of H2 gas if 5.00 g of Na are completely reacted and the H2 gas is collected at STP?
    • A. 

      0.109 L

    • B. 

      2.44 L

    • C. 

      4.88 L

    • D. 

      5.09 L

  • 7. 
    • A. 

      F

    • B. 

      G

    • C. 

      H

    • D. 

      J

  • 8. 
    • A. 

      Volume

    • B. 

      Mass

    • C. 

      Boiling point

    • D. 

      Number of moles

  • 9. 
    Which mixture can be separated through filtration because one of the substances is insoluble in water?
    • A. 

      NaClO and Pb(ClO) 3

    • B. 

      Na2SO4 and SrSO4

    • C. 

      NaNO and Pb(NO)

    • D. 

      NaCHO and Pb(CHO) 2

  • 10. 
  • 11. 
    Some students used a variety of procedures to investigate four liquid samples. The students recorded the following information. • When Sample W was cooled, solid particles settled out of the liquid. • The mass and volume of Sample X were measured, and the density of Sample X was calculated to be 1.6 g/mL. • Sample Y was heated, and the temperature was recorded. All the liquid boiled away at the same temperature and left no residue in the container. • When a dilute acid was added to Sample Z, gas bubbles formed and rapidly rose to the surface of the liquid. Based on these observations, which sample was clearly identifiable as a pure substance?
    • A. 

      Sample W

    • B. 

      Sample X

    • C. 

      Sample Y

    • D. 

      Sample Z

  • 12. 
    What is the electron configuration for an atom of germanium at ground state?
    • A. 

      [Ar]4s2 3d10 4p2

    • B. 

      [Ar]4s2 4d10 4p2

    • C. 

      [Kr]4s2 3d10 4p2

    • D. 

      [Kr]4s2 4d10 4p2

  • 13. 
    Which of the following correctly matches a compound with its molecular geometry?
    • A. 

      Water (H2O): linear

    • B. 

      Carbon dioxide (CO ): tetrahedral 2

    • C. 

      Ammonia (NH3): trigonal planar

    • D. 

      Methane (CH4): tetrahedral

  • 14. 
    A sample of a compound is added to distilled water in a clean beaker. A reaction occurs, and the water temperature drops rapidly. Which of the following statements is best supported by this observation?
    • A. 

      An endothermic reaction occurred.

    • B. 

      A dehydration reaction occurred.

    • C. 

      The water was originally warmer than the compound.

    • D. 

      The beaker was contaminated by another compound.

  • 15. 
    Use the equation below to answer the following question. BaCl (aq) + Na SO (aq) → 2NaCl(aq) + BaSO (s) 2244 The theoretical yield of BaSO4 is 58.35 g. If 44.34 g of BaSO4 are produced from the reaction shown above, what is the percent yield of BaSO4?
    • A. 

      31.67%

    • B. 

      52.03%

    • C. 

      75.99%

    • D. 

      85.17%

  • 16. 
    When zinc is exposed to air, zinc oxide is produced. What happens in this reaction?
    • A. 

      Zinc is oxidized, and oxygen is reduced.

    • B. 

      Zinc is reduced, and oxygen is oxidized.

    • C. 

      Both zinc and oxygen are oxidized.

    • D. 

      Both zinc and oxygen are reduced.

  • 17. 
    • A. 

      A

    • B. 

      B

    • C. 

      C

    • D. 

      D

  • 18. 
    How many molecules are in 0.500 mole of N2O5?
    • A. 

      1.20×1023 molecules

    • B. 

      3.01×1023 molecules

    • C. 

      6.02×1023 molecules

    • D. 

      3.01×1024 molecules

  • 19. 
    • A. 

      A heterogeneous mixture

    • B. 

      An element

    • C. 

      A compound

    • D. 

      A homogeneous mixture

  • 20. 
    • A. 

      544 mm Hg

    • B. 

      784 mm Hg

    • C. 

      1830 mm Hg

    • D. 

      6212 mm Hg

  • 21. 
    Which of these statements is an accurate description of the ionization energies of elements in the periodic table?
    • A. 

      The ionization energy of lithium is greater than that of potassium.

    • B. 

      The ionization energy of iodine is greater than that of fluorine.

    • C. 

      The ionization energy of magnesium is greater than that of sulfur.

    • D. 

      The ionization energy of krypton is greater than that of neon.

  • 22. 
    In a famous experiment conducted by Ernest Rutherford, positively charged alpha particles were scattered by a thin gold foil. Which of the following is a conclusion that resulted from this experiment?
    • A. 

      The nucleus is negatively charged.

    • B. 

      The atom is a dense solid and is indivisible.

    • C. 

      The mass is conserved when atoms react chemically.

    • D. 

      The nucleus is very small and the atom is mostly empty space.

  • 23. 
    • A. 

      Liquid condenses on a cold glass rod when gas from the test tube on the left is released.

    • B. 

      A gas probe indicates that the water in the beaker contains dissolved nitrogen and oxygen.

    • C. 

      A burning wood splint placed above the mouth of the test tube on the right glows brighter when some gas is released from the test tube.

    • D. 

      The temperature of the wire connected to the battery increases.

  • 24. 
    • A. 

      Trihydrogen phosphite

    • B. 

      Phosphoric acid

    • C. 

      Phosphorous hydroxide

    • D. 

      Phosphorous acid

  • 25. 
    • A. 

      Indium (In), because it has a slightly higher atomic mass than aluminum (Al), and tin (Sn), because it has a slightly higher atomic mass than silicon (Si)

    • B. 

      Cadmium (Cd), because it has chemical properties similar to those of zinc (Zn), and mercury (Hg), because it has chemical properties similar to those of arsenic (As)

    • C. 

      Antimony (Sb), because it has a slightly higher atomic mass than zinc (Zn), and bismuth (Bi), because it also has a higher atomic mass than zinc (Zn)

    • D. 

      Gallium (Ga), because it has chemical properties similar to those of aluminum (Al), and germanium (Ge), because it has chemical properties similar to those of silicon (Si)

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