Download 3rd Quarter Test

3rd Quarter Test- Review
2010 Version
1) Which substance can be decomposed by a chemical change?
a) beryllium
b) boron
c) methanol
2) The particles in a crystalline solid are arranged
a) randomly and far apart
c) regularly and far apart
d) magnesium
b) randomly and close together
d) regularly and close together
3) Which is the electron configuration of an atom in the excited state?
a) 2 – 5
b) 2 – 8 – 8 – 1
c) 2 – 8 – 9 – 2
d) 2 – 8 – 7 – 1
4) What is the total number of electrons in an atom with an atomic number of 13 and a mass number of 27?
a) 13
b) 14
c) 27
d) 40
5) All isotopes of a given element must have the same
a) atomic mass
c) mass number
b) atomic number
d) number of neutrons
6) Which particle has a mass of approximately one atomic mass unit and a unit positive charge?
a) a neutron
b) a beta particle
c) an alpha particle
d) a proton
7) What is to correct formula for ammonium carbonate?
a) NH4(CO3)2
b) (NH4)2(CO3)2
c) NH4CO3
8) A molecule of ammonia (NH3) contains
a) ionic bonds, only
c) covalent bonds, only
d) (NH4)2CO3
b) both ionic and covalent bonds
d) neither ionic nor covalent bonds
9) Which of the following liquids has the weakest intermolecular forces of attraction between its molecules?
a) Xe (l)
b) Kr (l)
c) Ne (l)
d) He (l)
10) Which type of bond exists in a molecule of hydrogen iodide?
a) a polar covalent bond with an electronegativity difference of zero
b) a polar covalent bond with an electronegativity difference between zero and 1.7
c) a non-polar covalent bond with an electronegativity difference of zero
d) a non-polar covalent bond with an electronegativity difference between zero and 1.7
11) Compared to the nonmetals in Period 2, the metals in Period 2 generally have larger
a) ionization energy
b) electronegativities
c) atomic radii
d) atomic numbers
12) Which of the following Group 2 elements has the lowest first ionization energy?
a) Be
b) Mg
c) Ca
d) Ba
13) Which four elements have the most similar chemical properties?
a) 19, 23, 30, 36
b) 9, 16, 33, 50
c) 3, 12, 21, 40
d) 4, 20, 38, 88
14) Which element in Period 3 is the most active nonmetal?
a) sodium
b) magnesium
c) chlorine
d) argon
15) What mass contains 6.0 x 1023 atoms?
a) 6.0 g of carbon
b) 16 g of sulfur
d) 28 g of silicon
c) 3.0 g of helium
16) The percent by mass of oxygen in MgO (gram formula mass = 40) is closest to
a) 16 %
b) 24 %
c) 40 %
d) 60 %
17) What is the mass in grams of 2.00 moles of CaCl2?
a) 1.00
b) 2.00
c) 111
d) 222
18) Which is the formula for magnesium sulfide?
a) MgS
b) MgSO4
d) MnSO4
c) MnS
19) Equilibrium is reached in all reversible chemical reactions when the
a) forward reaction stops
b) reverse reaction stops
c) concentration of the reactants and the products becomes equal
d) rates of the opposing reaction becomes equal
20) For a chemical system at equilibrium, a rise in temperature will
a) favor the endothermic reaction
b) favor the exothermic reaction
c) decrease the rates of reaction
d) have no effect upon the equilibrium
21) As 1 gram of H2O (g) changes to 1 gram of H2O (l), the entropy of the system
a) decreases
b) increases
c) remains the same
22) Given the reaction: A + B  C + D
The reaction will most likely occur at the greatest rate if A and B represent
a) nonpolar molecular compounds in the solid state
b) ionic compounds in the solid state
c) solutions of nonpolar molecular compounds
d) solution of ionic compounds
23) Which substance is a binary compound?
a) ammonia
b) argon
c) glucose
d) glycerol
24) Which atom in the ground state has five electrons in its outer level and ten electrons in its kernel
a) C
b) Cl
c) Si
d) P
25) Which molecule has an asymmetrical shape?
a) N2
b) NH3
c) Cl2
d) CCl4
26) Which ion has the largest radius?
a) Na+
b) Mg+2
c) K+
d) Ca+2
27) What is the total number of moles of oxygen atoms in 1 mole of N2O3?
a) 1
b) 2
c) 3
d) 5
28) What is the simplest ratio of nitrogen to oxygen atoms in the compound nitrogen (IV) oxide?
a) 1:2
b) 2:1
c) 2:4
d) 4:2
29) What is the total number of electrons in the valence shell of an atom of aluminum in the ground state?
a) 8
b) 2
c) 3
d) 10
30) The empirical formula of a compound is C1H2 and the molecular mass of the compound is 56. What is the
molecular formula of the compound?
a) C2H4
b) C4H6
c) C4H8
d) C6H10
31) How many moles are 29 grams of NaCl?
a) 0.50
b) 2.0
c) 1.0
d) 58
32) If the mass of a mole of H2X is 34 g, then X must represent
a) O
b) Cl
c) Kr
d) S
33) Which of the following is a unit of heat?
a) torr
b) degree
d) joule
c) gram
34) An atom in the ground state contains 8 valence electrons. This atom is classified as a
a) metal
b) semimetal
c) noble gas
d) halogen
35) The alkaline earth metals are found in Group
a) 1
b) 2
c) 11
36) The atom of carbon-14 contains
a) 8 protons, 6 neutrons and 6 electrons
c) 6 protons, 8 neutrons and 8 electrons
b) 6 protons, 6 neutrons and 8 electrons
d) 6 protons, 8 neutrons and 6 electrons
d) 12
37) A compound has a molar mass of 90. grams per mole and the empirical formula CH2O. What is the
molecular formula of this compound?
a) CH2O
b) C2H4O2
c) C3H6O3
d) C4H8O4
38) What mass contains 6.0 x 1023 atoms?
a) 6.0 g of carbon
b) 16 g of sulfur
c) 3.0 g of helium
d) 28 g of silicon
39) When 418 joules of heat energy are added to 10.0 grams of water at 20.0oC, the final temperature of the
water will be
a) 10.0oC
b) 30.0oC
c) 40.0oC
d) 100.0oC
40) Which substance can be decomposed by a chemical change?
a) beryellium
b) boron
c) methanol
d) magnesium
41) Nonmetals in the solid state are poor conductors of heat and tend to
a) be brittle
b) be malleable
c) have a shiny luster
d) have a good electrical conductivity
42) Atoms of which element have the greatest tendency to gain electrons?
a) bromine
b) chlorine
c) fluorine
d) iodine
Answers
1) c
2) d
3) d
4) a
5) b
6) d
7) d
8) c
9) d
10) b
11) c
12) d
13) d
14) c
15) d
16) c
17) d
18) a
19) d
20) a
21) a
22) d
23) a
24) d
25) b
26) c
27) c
28) a
29) c
30) c
31) a
32) d
33) d
34) c
35) b
36) d
37) c
38) d
39) b
40) c
41) a
42) c