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Physical Setting / Chemistry - New York Regents January 2013 Exam

   Directions (1–30): For each statement or question, record on your separate answer sheet the number of the
word or expression that, of those given, best completes the statement or answers the question. Some questions
may require the use of the 2011 Edition Reference Tables for Physical Setting/Chemistry.

Formats Worksheet / Test Paper Quiz Review
: Multiple choice

Your Performance  

1.

1 Which particles have approximately the same
  mass?
  (1) alpha particle and beta particle
  (2) alpha particle and proton
  (3) neutron and positron
  (4) neutron and proton

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2.

2 Which phrase describes an atom?
  (1) a negatively charged nucleus surrounded by
      positively charged protons
  (2) a negatively charged nucleus surrounded by
      positively charged electrons
  (3) a positively charged nucleus surrounded by
      negatively charged protons
  (4) a positively charged nucleus surrounded by
      negatively charged electrons

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3.

3 An orbital is defined as a region of the most
  probable location of
  (1) an electron         (3) a nucleus
  (2) a neutron           (4) a proton

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4.

4 The bright-line spectrum of an element in the
  gaseous phase is produced as
  (1) protons move from lower energy states to
      higher energy states
  (2) protons move from higher energy states to
      lower energy states
  (3) electrons move from lower energy states to
      higher energy states
  (4) electrons move from higher energy states to
      lower energy states

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5.

5 An atom of lithium-7 has an equal number of
  (1) electrons and neutrons
  (2) electrons and protons
  (3) positrons and neutrons
  (4) positrons and protons

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6.

6 In which type of chemical reaction do two or
  more reactants combine to form one product,
  only?
  (1) synthesis
  (2) decomposition
  (3) single replacement
  (4) double replacement

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7.

7 Which statement explains why neon is a Group 18
  element?
  (1) Neon is a gas at STP.
  (2) Neon has a low melting point.
  (3) Neon atoms have a stable valence electron
      configuration.
  (4) Neon atoms have two electrons in the first
      shell.

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8.

8 Which element has chemical properties that are
  most similar to the chemical properties of
  fluorine?
  (1) boron             (3) neon
  (2) chlorine          (4) oxygen

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9.

9 What occurs as two atoms of fluorine combine
  to become a molecule of fluorine?
  (1) A bond is formed as energy is absorbed.
  (2) A bond is formed as energy is released.
  (3) A bond is broken as energy is absorbed.
  (4) A bond is broken as energy is released.

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10.

10 What is the number of pairs of electrons that are
   shared between the nitrogen atoms in a molecule
   of N2?
   (1) 1                    (3) 3
   (2) 2                    (4) 6

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11.

11 Which set of values represents standard
   pressure and standard temperature?
   (1) 1 atm and 101.3 K
   (2) 1 kPa and 273 K
   (3) 101.3 kPa and 0°C
   (4) 101.3 atm and 273°C

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12.

12 Which statement about one atom of an element
   identifies the element?
   (1) The atom has 1 proton.
   (2) The atom has 2 neutrons.
   (3) The sum of the number of protons and
       neutrons in the atom is 3.
   (4) The difference between the number of
       neutrons and protons in the atom is 1.

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13.

13 A substance is classified as either an element or a
   (1) compound
   (2) solution
   (3) heterogeneous mixture
   (4) homogeneous mixture

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14.

14 A solid element that is malleable, a good
   conductor of electricity, and reacts with oxygen
   is classified as a
   (1) metal                   (3) noble gas
   (2) metalloid               (4) nonmetal

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15.

15 Three forms of energy are
   (1) chemical, exothermic, and temperature
   (2) chemical, thermal, and electromagnetic
   (3) electrical, nuclear, and temperature
   (4) electrical, mechanical, and endothermic

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16.

16 What is the total amount of heat required to
   vaporize 1.00 gram of H2O(ℓ) at 100.°C and
   1 atmosphere?
   (1) 4.18 J             (3) 373 J
   (2) 334 J              (4) 2260 J

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17.

17 What is required for a chemical reaction to
   occur?
   (1) standard temperature and pressure
   (2) a catalyst added to the reaction system
   (3) effective collisions between reactant particles
   (4) an equal number of moles of reactants and
       products

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18.

18 Which compound is soluble in water?
   (1) PbS               (3) Na2S
   (2) BaS               (4) Fe2S3

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19.

19 Compared to a 26-gram sample of NaCl(s) at
   STP, a 52-gram sample of NaCl(s) at STP has
   (1) a different density
   (2) a different gram-formula mass
   (3) the same chemical properties
   (4) the same volume

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20.

20 A gas changes directly to a solid during
   (1) fusion                (3) saponification
   (2) deposition            (4) decomposition

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21.

21 The phase of a sample of a molecular substance
   at STP is not determined by its
   (1) arrangement of molecules
   (2) intermolecular forces
   (3) number of molecules
   (4) molecular structure

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22.

22 Which atom has the weakest attraction for
   electrons in a chemical bond?
   (1) a boron atom         (3) a fluorine atom
   (2) a calcium atom       (4) a nitrogen atom

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23.

23 Which statement describes a chemical reaction
   at equilibrium?
   (1) The products are completely consumed in
       the reaction.
   (2) The reactants are completely consumed in
       the reaction.
   (3) The concentrations of the products and
       reactants are equal.
   (4) The concentrations of the products and
       reactants are constant.

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24.

24 Which element has atoms that can bond to each
   other in rings and networks?
   (1) aluminum             (3) hydrogen
   (2) carbon               (4) oxygen

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25.

25 In an oxidation-reduction reaction, the total
   number of electrons lost is
   (1) equal to the total number of electrons
       gained
   (2) equal to the total number of protons gained
   (3) less than the total number of electrons
       gained
   (4) less than the total number of protons gained

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26.

26 Which compounds are electrolytes?
   (1) C2H5OH and H2SO4
   (2) C2H5OH and CH4
   (3) KOH and H2SO4
   (4) KOH and CH4

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27.

27 Which compounds yield hydrogen ions as the
   only positive ions in an aqueous solution?
   (1) H2CO3 and HC2H3O2
   (2) H2CO3 and NaHCO3
   (3) NH3 and HC2H3O2
   (4) NH3 and NaHCO3

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28.

28 Nuclei of U-238 atoms are
   (1) stable and spontaneously absorb alpha
       particles
   (2) stable and spontaneously emit alpha particles
   (3) unstable and spontaneously absorb alpha
       particles
   (4) unstable and spontaneously emit alpha
       particles

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29.

29 Which nuclear emission has the greatest
   penetrating power?
   (1) proton          (3) gamma radiation
   (2) beta particle   (4) positron

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30.

30 The dating of geological formations is an example
   of a beneficial use of
   (1) isomers
   (2) electrolytes
   (3) organic compounds
   (4) radioactive nuclides

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