The Chemistry Regents Exam Preparation Test

22 Questions | Total Attempts: 6018

SettingsSettingsSettings
Please wait...
The Chemistry Regents Exam Preparation Test

Chemistry Regents Prep Quiz #1 RF Table P1 P2 P3


Questions and Answers
  • 1. 
    Compared to the charge and mass of a proton, an electron has...
    • A. 

      The same charge and a smaller mass.

    • B. 

      The same charge and the same mass.

    • C. 

      An opposite charge and a smaller mass.

    • D. 

      An opposite charge and the same mass.

  • 2. 
    When alpha particles are used to bombard gold foil, most of the alpha particles pass through undeflected. This result indicates that most of the volume of a gold atom consists of _____.
    • A. 

      Deuterons

    • B. 

      Neutrons

    • C. 

      Protons

    • D. 

      Unoccupied space

  • 3. 
    A proton has approximately the same mass as...
    • A. 

      A neutron.

    • B. 

      An alpha particle.

    • C. 

      A beta particle.

    • D. 

      An electron.

  • 4. 
    What is an example of "Yttrium" in the excited state?
    • A. 

      2-7-19-9-2

    • B. 

      2-8-18-9-2

    • C. 

      2-7-17-8-3

    • D. 

      2-8-18-7-4

    • E. 

      2-8-18-6-6

  • 5. 
    Which symbols represent atoms that are isotopes?
    • A. 

      C-14 and N-14

    • B. 

      O-16 and O-18

    • C. 

      Rn-222 and Ra-222

    • D. 

      I-131 and I-131

  • 6. 
    Which atom contains exactly 15 protons?
    • A. 

      P-32

    • B. 

      S-32

    • C. 

      O-15

    • D. 

      N-15

  • 7. 
    An ion with 5 protons, 6 neutrons, and a charge of 3+ has an atomic number of...
    • A. 

      5

    • B. 

      6

    • C. 

      8

    • D. 

      11

  • 8. 
    What is the mass number of an atom which contains 28 protons, 28 electrons, and 34 neutrons?
    • A. 

      6

    • B. 

      28

    • C. 

      34

    • D. 

      62

    • E. 

      90

  • 9. 
    Which three groups of the Periodic Table contain the most elements classified as metalloids (semimetals)?
    • A. 

      1, 2, and 13

    • B. 

      2, 13, and 14

    • C. 

      14, 15, and 16

    • D. 

      16, 17, and 18

  • 10. 
    Which element has the highest first ionization energy?
    • A. 

      Sodium

    • B. 

      Aluminum

    • C. 

      Calcium

    • D. 

      Phosphorus

  • 11. 
    When a metal atom combines with a nonmetal atom, the nonmetal atom will...
    • A. 

      Lose electrons and decrease in size.

    • B. 

      Lose electrons and increase in size.

    • C. 

      Gain electrons and decrease in size.

    • D. 

      Gain electrons and increase in size.

  • 12. 
    Which element in Group 15 has the strongest metallic character?
    • A. 

      Bi

    • B. 

      As

    • C. 

      P

    • D. 

      N

  • 13. 
    Atoms of elements in a group on the Periodic Table have similar chemical properties. This similarity is most closely related to the atoms'...
    • A. 

      Number of principal energy levels.

    • B. 

      Number of valence electrons.

    • C. 

      Atomic numbers.

    • D. 

      Atomic masses.

  • 14. 
    At STP, which substance is the best conductor of electricity?
    • A. 

      Nitrogen

    • B. 

      Neon

    • C. 

      Sulfur

    • D. 

      Silver

  • 15. 
    Given the unbalanced equation: Al + O2 = Al2O3 When this equation is completely balanced using the smallest whole numbers, what is the sum of the coefficients?
    • A. 

      2

    • B. 

      3

    • C. 

      4

    • D. 

      7

    • E. 

      9

  • 16. 
    What is the empirical formula of the compound whose molecular formula is P4O10? (NOTE: Pv2O = P2O)
    • A. 

      PO

    • B. 

      POv2

    • C. 

      Pv2Ov5

    • D. 

      Pv8Ov20

  • 17. 
    Which is the correct formula for nitrogen (1) oxide? (NOTE: Nv2O = N2O)
    • A. 

      NO

    • B. 

      Nv2O

    • C. 

      NOv2

    • D. 

      Nv2Ov3

  • 18. 
    What is the total number of atoms represented in the formula CuSO4 . 5H2O?
    • A. 

      8

    • B. 

      21

    • C. 

      13

    • D. 

      27

  • 19. 
    What is the gram formula mass of K2CO3?
    • A. 

      106 g

    • B. 

      67 g

    • C. 

      99 g

    • D. 

      138 g

  • 20. 
    What is the percent by mass of oxygen in magnesium oxide, MgO?
    • A. 

      20%

    • B. 

      30%

    • C. 

      40%

    • D. 

      50%

    • E. 

      60%

  • 21. 
    What is the total number of moles of hydrogen gas contained in 9.03 x 1023?
    • A. 

      1.50 moles

    • B. 

      2.00 moles

    • C. 

      6.02 moles

    • D. 

      9.03 moles

  • 22. 
    Which formula represents a molecular substance?
    • A. 

      CaO

    • B. 

      CO

    • C. 

      Al2O3

    • D. 

      Li2O

Back to Top Back to top