Chemistry Test With Answer Key - Regents High School Examination, The University Of The State Of New York, 2016 Page 2
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33Part A
Answer all questions in this part.
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.
1 Which phrase describes the charge and mass of
7 Which processes represent one chemical change
a neutron?
and one physical change?
(1) a charge of 1 and no mass
(1) freezing and melting
(2) a charge of 1 and an approximate mass of 1 u
(2) freezing and vaporization
(3) no charge and no mass
(3) decomposition and melting
(4) no charge and an approximate mass of 1 u
(4) decomposition and combustion
2 What is the number of electrons in a potassium
8 In the ground state, an atom of each of the
atom?
elements in Group 2 has a different
(1) 18
(3) 20
(1) oxidation state
(2) 19
(4) 39
(2) first ionization energy
(3) number of valence electrons
(4) number of electrons in the first shell
3 The number of valence electrons in each atom
of an element affects the element’s
9 Which statement explains why water is classified
(1) chemical properties (3) decay mode
as a compound?
(2) number of isotopes (4) half-life
(1) Water can be broken down by chemical means.
(2) Water is a liquid at room temperature.
4 The nuclides I-131 and I-133 are classified as
(3) Water has a heat of fusion of 334 J/g.
(1) isomers of the same element
(4) Water is a poor conductor of electricity.
(2) isomers of Xe-131 and Cs-133
(3) isotopes of the same element
10 Which formula is an empirical formula?
(4) isotopes of Xe-131 and Cs-133
(1) CH
(3) C
H
4
3
6
(2) C
H
(4) C
H
5 The elements on the Periodic Table are
2
6
4
10
arranged in order of increasing
11 Which compound contains both ionic and covalent
(1) mass number
bonds?
(2) atomic number
(3) number of isotopes
(1) KI
(3) CH
Br
2
2
(4) number of valence electrons
(2) CaCl
(4) NaCN
2
6 Compared to a 1.0-gram sample of chlorine gas
12 Given the balanced equation representing a
at standard pressure, a 1.0-gram sample of solid
reaction:
→ H
aluminum at standard pressure has
H
H
2
(1) a lower melting point
(2) a higher boiling point
What occurs during this reaction?
(3) a lower density
(1) Energy is absorbed as bonds are formed.
(4) a greater volume
(2) Energy is absorbed as bonds are broken.
(3) Energy is released as bonds are formed.
(4) Energy is released as bonds are broken.
[2]
P.S./Chem.–Jan. ’16
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