Download Aps midREVIEW

Name: ____________________________________
1. Given the electron dot diagram: The valence electrons represented by the electron dot diagram
could be those of atoms in Group
A. B. C. D. 13
15
3
16
2. 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
3. Which substance can be decomposed by chemical change?
A. beryllium
B. boron
C. methanol
D. magnesium
4. Which element is an active nonmetal?
A. neon
B. oxygen
C. zinc
D. chromium
5. To which group do the alkaline earth metals belong?
A. 1
B. 2
C. 11
D. 12
6. What is the total number of electrons present in an atom of ?
A. B. C. D. 27
32
39
86
8. Which formula represents a substance that contains
covalent bonds?
A. LiCl
B. CaCl2
C. K2 O
D. CO2
9. Neutral atoms of 35Cl and 37Cl differ with respect to their
number of
A. electrons
B. protons
C. neutrons
D. positrons
10. Spectral lines produced from the radiant energy emitted
from excited atoms are thought to be due to the movements of
electrons
A. from lower to higher energy levels
B. from higher to lower energy levels
C. in their orbitals
D. out of the nucleus
11. Which is the correct electron-dot formula for a molecule of
chlorine?
A. C. B. D. 12. All samples of an element are composed of atoms with the
same
A. atomic mass
B. atomic number
C. number of nucleons
D. number of neutrons
13. The mass of a solid is 3.60 grams and its volume is 1.8 cubic
centimeters. What is the density of the solid, expressed to the
correct number of significant figures?
A. 2 g/cm3
B. 2.0 g/cm3
C. 0.5 g/cm3
D. 0.50 g/cm3
7. What is the correct formula for ammonium carbonate?
A. NH4 (CO3 )2
B. NH4 CO3
C. (NH4 )2 (CO3 )2
D. (NH4 )2 CO3
14. What is the gram formula mass of Li2 SO4 ?
A. B. C. D. 54g
55g
110g
206g
15. The formula for calcium cyanide is
A. CaCN2
B. CaSCN2
C. Ca(CN)2
D. Ca(SCN)2
16. What is the correct formula for chromium (III) oxide?
A. CrO3
B. Cr3 O
C. Cr2 O3
D. Cr3 O2
17. When the pressure exerted on a confined gas at constant
temperature is doubled, the volume of the gas is
A. halved
B. doubled
C. tripled
D. quartered
18. Which is an example of a binary compound?
A. acetic acid
B. nitric acid
C. potassium hydroxide
D. potassium oxide
19. The volume of a sample of gas is 1.0 liter at STP. If the
pressure remains constant and the temperature is raised to 547
K, the new volume of the gas will be
A. 0.25 L
B. 2.0 L
C. 0.50L
D. 4.0 L
22. Compared to the entire atom, the nucleus of the atom is
A. smaller and contains most of the atom’s mass
B. smaller and contains little of the atom’s mass
C. larger and contains most of the atom’s mass
D. larger and contains little of the atom’s mass
23. The atomic number of any atom is equal to the number of
A. neutrons in the atom, only
B. protons in the atom, only
C. neutrons plus protons in the atoms
D. protons plus electrons in the atom
24. What is the correct formula for iron (II) bromide?
A. FeBr2
B. Fe2 Br
C. FeBrO2
D. Fe2 BrO2
25. In an experiment, alpha particles were used to bombard
gold foil. As a result of this experiment, the conclusion was
made that the nucleus of an atom is
A. smaller than the atom and positively charged
B. smaller than the atom and negatively charged
C. larger than the atom and positively charged
D. larger than the atom and negatively charged
26. An example of a heterogeneous mixture is
A. soil
B. sugar
C. carbon monoxide
D. carbon dioxide
27. In the compound shown in the diagram: 20. Neutral atoms of the same element can differ in their
number of
A. neutrons
B. positrons
C. protons
D. electrons
21. Which element is in Group 2 (IIA) and Period 7 of the
Periodic Table?
A. magnesium
B. manganese
C. radium
D. radon
Which element that could be represented by X would have the
greatest attraction for electrons in the bond?
A. B. C. D. iodine
chlorine
bromine
fluorine
28. Which graph best represents a change of phase from a gas
to a solid?
A. 31. During which change is energy absorbed?
A. the melting of ice
B. the cooling of ice
C. the freezing of water
D. the condensation of water
B. 32. Which of the following atoms has the greatest nuclear
charge?
A. Al
B. Ar
C. Si
D. Na
33. An atom of carbon-14 contains
A. 8 protons, 6 neutrons and 6 electrons
B. 6 protons, 6 neutrons and 8 electrons
C. 6 protons, 8 neutrons and 8 electrons
D. 6 protons, 8 neutrons and 6 electrons
C. 34. When the equation
__C8 H16 + __O2 → __CO2 + __H2 O is correctly balanced using the smallest whole number
coefficient, the coefficient of O2 is
D. A. B. C. D. 1
8
12
16
35. Which pair must represent atoms of the same element?
29. Which statement best describes an electron?
A. It has a smaller mass than a proton and a negative
charge.
B. It has a smaller mass than a proton and a positive
charge.
C. It has a greater mass than a proton and a negative
charge.
D. It has a greater mass than a proton and a positive
charge.
30. Element X is in Group 2 (IIA) and element Y is in Group 17
(VIIA). A compound formed between these two elements is
most likely to have the formula
A. X2 Y
B. XY2
C. X2 Y7
D. X7 Y2
A. and B. and C. D. and and 36. A student observing the behavior of paradichlorobenzene
first heats 10 grams of the substance in a hot water bath until it
is completely liquified. The data in the table are recorded as
paradichloro-benzene cools.
40. A white crystalline salt conducts electricity when it is
melted and when it is dissolved in water. Which type of bond
does this salt contain?
A. ionic
B. metallic
C. covalent
D. network
41. Which substance is composed of atoms that all have the
same atomic number?
A. magnesium
B. methane
C. ethane
D. ethene
42. When the equation: __Al2 (SO4 )3 + __ZnCl2 → __AlCl3 +
__ZnSO4
is correctly balanced using the smallest whole number
coefficients, the sum of the coefficients is
What is the freezing point of paradichlorobenzene?
A. B. C. D. 42°C
53°C
58°C
65°C
37. What is the formula mass of Al2 (SO4 )3 ?
A. B. C. D. 123
150.
214
342
38. Which term refers to the region of an atom where an
electron is most likely to be found?
A. orbital
B. orbit
C. quantum
D. spectrum
39. A student investigated the physical and chemical
properties of a sample of an unknown gas and then identified
the gas. Which statement represents a conclusion rather than
an experimental observation?
A. The gas is colorless.
B. The gas is carbon dioxide.
C. When the gas is bubbled into limewater, the liquid
becomes cloudy.
D. When placed in the gas, a flaming splint stops burning.
A. B. C. D. 9
8
5
4
43. Which phase change represents sublimation?
A. solid to gas
B. solid to liquid
C. gas to solid
D. gas to liquid
44. More than two-thirds of the elements of the Periodic Table
are classified as
A. metalloids
B. metals
C. nonmetals
D. noble gases
45. When metals form ions, they tend to do so by
A. losing electrons and forming positive ions
B. losing electrons and forming negative ions
C. gaining electrons and forming positive ions
D. gaining electrons and forming negative ions
46. The graph represents the uniform cooling of water at 1
atmosphere, starting with water as a gas above its boiling point.
51. What is the maximum number of electrons that may be
present in the fourth principal energy level of an atom?
A. 8
B. 2
C. 18
D. 32
52. Which substance takes the shape of and fills the volume of
any container into which it is placed?
A. H2 O ( )
B. I2 (s)
C. CO2 (g)
D. Hg ( )
Which segments of the cooling curve represent the fixed points
on a thermometer?
A. B. C. D. AB and CD
BC and DE
AF and EF
CD and EF
47. What is the gram formula mass of (NH4 )2 SO4 ?
A. B. C. D. 66.0 g
94.0 g
114 g
132 g
48. Which electronegativity is possible for an alkali metal?
A. 1.0
B. 2.0
C. 3.0
D. 4.0
49. Compared to atoms of metals, atoms of nonmetals generally
have
A. higher electronegativities and lower ionization energies
B. higher electronegativities and higher ionization energies
C. lower electronegativities and lower ionization energies
D. lower electronegativities and higher ionization energies
50. A sample of a gas has a volume of 2.0 liters at a pressure of
1.0 atmosphere. When the volume increases to 4.0 liters, at
constant temperature, the pressure will be
A. 1.0 atm
B. 2.0 atm
C. 0.50 atm
D. 0.25 atm
53. Given the equation: __FeCl2 + __Na2 CO3 → __FeCO3 +
__NaCl
When the equation is correctly balanced using the smallest
whole numbers, the coefficient of NaCl is
A. B. C. D. 6
2
3
4
54. The correct electron dot formula for hydrogen chloride is
A. B. C. D. 55. During a laboratory activity, a student combined two
solutions. In the laboratory report, the student wrote "A yellow
color appeared." The statement represents the student's
recorded
A. conclusion
B. observation
C. hypothesis
D. inference