Name______________________________________Date______________________ Class_______________
Pre-AP Test Two Retake Assignment
Matching
Match each item with the correct statement below.
a. proton
d. electron
b. nucleus
e. neutron
c. atom
____
____
____
____
____
1.
2.
3.
4.
5.
the smallest particle of an element that retains the properties of that element
a positively charged subatomic particle
a negatively charged subatomic particle
a subatomic particle with no charge
the central part of an atom, containing protons and neutrons
Match each item with the correct statement below.
a. mass number
d. atomic mass
b. atomic mass unit
e. isotope
c. atomic number
____ 6.
____ 7.
____ 8.
____ 9.
____ 10.
atoms with the same number of protons, but different numbers of neutrons in the nucleus of an atom
the total number of protons and neutrons in the nucleus of an atom
the number of protons in the nucleus of an element
the weighted average of the masses of the isotopes of an element
one-twelfth the mass of a carbon atom having six protons and six neutrons
Match each item with the correct statement below.
a. mixture
d. reactant
b. product
e. heterogeneous mixture
c. phase
f. vapor
____
____
____
____
____
____
11.
12.
13.
14.
15.
16.
gaseous state of substance that is a liquid or solid at room temperature
a physical blend of two or more components
part of a sample having uniform composition and properties
not uniform in composition
a substance formed in a chemical reaction
starting substance in a chemical reaction
Match each item with the correct statement below.
a. distillation
d. compound
b. mass
e. element
c. chemical reaction
f. homogeneous
____
____
____
____
____
____
17.
18.
19.
20.
21.
22.
amount of matter an object contains
describes mixture with a uniform composition
a process in which a liquid is boiled to produce a vapor that is condensed again into a liquid
substance that cannot be changed into simpler substances by chemical means
composed of two or more substances chemically combined in a fixed proportion
process in which substances are changed into different substances
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Name______________________________________Date______________________ Class_______________
Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
____ 23. The smallest particle of an element that retains the properties of that element is a(n) ____.
a. atom
c. proton
b. electron
d. neutron
____ 24. The particles that are found in the nucleus of an atom are ____.
a. neutrons and electrons
c. protons and neutrons
b. electrons only
d. protons and electrons
____ 25. The nucleus of an atom is ____.
a. the central core and is composed of protons and neutrons
b. positively charged and has more protons than neutrons
c. negatively charged and has a high density
d. negatively charged and has a low density
____ 26. The atomic number of an element is the total number of which particles in the nucleus?
a. neutrons
c. electrons
b. protons
d. protons and electrons
____ 27. An element has an atomic number of 76. The number of protons and electrons in a neutral atom of the element
are ____.
a. 152 protons and 76 electrons
c. 38 protons and 38 electrons
b. 76 protons and 0 electrons
d. 76 protons and 76 electrons
____ 28. The sum of the protons and neutrons in an atom equals the ____.
a. atomic number
c. atomic mass
b. nucleus number
d. mass number
____ 29. What does the number 84 in the name krypton-84 represent?
a. the atomic number
c. the sum of the protons and electrons
b. the mass number
d. twice the number of protons
____ 30. All atoms of the same element have the same ____.
a. number of neutrons
c. mass numbers
b. number of protons
d. mass
____ 31. Isotopes of the same element have different ____.
a. numbers of neutrons
c. numbers of electrons
b. numbers of protons
d. atomic numbers
____ 32. In which of the following sets is the symbol of the element, the number of protons, and the number of electrons
given correctly?
a. In, 49 protons, 49 electrons
c. Cs, 55 protons, 132.9 electrons
b. Zn, 30 protons, 60 electrons
d. F, 19 protons, 19 electrons
____ 33. How many protons, electrons, and neutrons does an atom with atomic number 50 and mass number 125
contain?
a. 50 protons, 50 electrons, 75 neutrons
c. 120 neutrons, 50 protons, 75 electrons
b. 75 electrons, 50 protons, 50 neutrons
d. 70 neutrons, 75 protons, 50 electrons
____ 34. If E is the symbol for an element, which two of the following symbols represent isotopes of the same element?
1.
E
a. 1 and 2
b. 3 and 4
2.
E
3.
E
4.
E
c. 1 and 4
d. 2 and 3
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Name______________________________________Date______________________ Class_______________
____ 35. In which of the following is the number of neutrons correctly represented?
a.
c.
F has 0 neutrons.
Mg has 24 neutrons.
b.
As has 108 neutrons.
d.
U has 146 neutrons.
____ 36. Which of the following isotopes has the same number of neutrons as phosphorus-31?
a.
c.
P
Si
b.
S
d.
Si
____ 37. What unit is used to measure weighted average atomic mass?
a. amu
c. angstrom
b. gram
d. nanogram
____ 38. Which of the following equals one atomic mass unit?
a. the mass of one electron
b. the mass of one helium-4 atom
c. the mass of one carbon-12 atom
d. one-twelfth the mass of one carbon-12 atom
____ 39. The atomic mass of an element depends upon the ____.
a. mass of each electron in that element
b. mass of each isotope of that element
c. relative abundance of protons in that element
d. mass and relative abundance of each isotope of that element
____ 40. Which of the following is NOT a physical property of water?
a. It has a boiling point of 100 C.
b. It is a colorless liquid.
c. It is composed of hydrogen and oxygen.
d. Sugar dissolves in it.
____ 41. Which of the following are considered physical properties of a substance?
a. color and odor
c. malleability and hardness
b. melting and boiling points
d. all of the above
____ 42. A substance that forms a vapor is generally in what physical state at room temperature?
a. solid
c. gas
b. liquid
d. liquid or solid
____ 43. Which state of matter takes both the shape and volume of its container?
a. solid
c. gas
b. liquid
d. both b and c
____ 44. Which state of matter is characterized by having an indefinite shape, but a definite volume?
a. gas
c. solid
b. liquid
d. none of the above
____ 45. Which state of matter expands when heated and is easy to compress?
a. gas
c. solid
b. liquid
d. all of the above
____ 46. Which of the following is a physical change?
a. corrosion
c. evaporation
b. explosion
d. rotting of food
____ 47. Which of the following CANNOT be classified as a substance?
a. table salt
c. nitrogen
b. air
d. gold
____ 48. Which of the following is a heterogeneous mixture?
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Name______________________________________Date______________________ Class_______________
____ 49.
____ 50.
____ 51.
____ 52.
____ 53.
____ 54.
____ 55.
____ 56.
____ 57.
____ 58.
____ 59.
____ 60.
____ 61.
a. air
c. steel
b. salt water
d. soil
Which of the following CANNOT be considered a single phase?
a. a pure solid
c. a homogeneous mixture
b. a pure liquid
d. a heterogeneous mixture
Separating a solid from a liquid by evaporating the liquid is called ____.
a. filtration
c. solution
b. condensation
d. distillation
An example of a homogeneous mixture is ____.
a. water
c. noodle soup
b. stainless steel
d. oxygen
Which of the following items is NOT a compound?
a. baking soda
c. sucrose
b. salad dressing
d. table salt
Which of the following is true about compounds?
a. They can be physically separated into their component elements.
b. They have compositions that vary.
c. They are substances.
d. They have properties similar to those of their component elements.
A substance that can be separated into two or more substances only by a chemical change is a(n) ____.
a. solution
c. mixture
b. element
d. compound
What is one difference between a mixture and a compound?
a. A compound consists of more than one phase.
b. A compound can only be separated into its components by chemical means.
c. A mixture can only be separated into its components by chemical means.
d. A mixture must be uniform in composition.
What do chemical symbols and formulas represent, respectively?
a. elements and compounds
b. atoms and mixtures
c. compounds and mixtures
d. elements and ions
Which of the following is a chemical property?
a. color
c. freezing point
b. hardness
d. ability to react with oxygen
Which of the following is NOT a physical change?
a. grating cheese
c. fermenting of cheese
b. melting cheese
d. mixing two cheeses in a bowl
Which of the following does NOT involve a physical change?
a. mixing
c. grinding
b. melting
d. decomposing
A chemical change occurs when a piece of wood ____.
a. is split
c. decays
b. is painted
d. is cut
Which of the following is a chemical property of water at 4 C?
a. its color
b. its state
c. its temperature
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Name______________________________________Date______________________ Class_______________
d. its ability to decompose into hydrogen and oxygen
____ 62. When paper turns yellow-brown upon exposure to sunlight, what type of change is likely taking place?
a. a physical change
b. a chemical change
c. neither a physical change nor a chemical change
d. both a physical change and a chemical change
Short Answer
63. The element chromium has four naturally occurring isotopes. Use the relative abundance of each to calculate
the average atomic mass of chromium.
Cr = 4.34%,
Cr = 83.79%,
Cr = 9.50%,
64. List the number of protons, neutrons, and electrons in
Cr = 2.37%.
P.
65. An ion has 8 protons, 10 electrons, and 9 neutrons. Write the chemical formula for the ion including it mass
number, atomic number, and charge in their correct locations around the chemical symbol.
66. An ion has 38 protons, 36 electrons, and a mass number of 88. Write the chemical formula for the ion
including it mass number, atomic number, and charge in their correct locations around the chemical symbol.
67. If 74.2 kJ of heat is applied to a 952-g block of metal, the temperature of the metal increases by 10.7 ºC.
Calculate the specific heat capacity of the metal in J/g ºC.
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Name______________________________________Date______________________ Class_______________
68. Calculate the energy required in joules and calories to heat 29.2 g of aluminum from 27.2 ºC to 41.5 ºC. The
specific heat of aluminum is 0.89 J/g ºC.
69. If 100. J of heat energy is applied to a 25-g sample mercury, by how many degrees will the temperature of the
mercury sample increase? The specific heat of mercury is 0.14 J/g ºC.
70. Write the rule to find the charge of group 1A through 3A metals. Give five examples of monoatomic cations
using this rule.
71. Write the rule to find the charge of any nonmetal. Give 5 examples of monoatomic anions.
72. Write the name followed by the formula for the 22 polyatomic ions on your handout.
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Name______________________________________Date______________________ Class_______________
73. Write formula and two names (stock and classical) for each the type II metals with more than one charge on
your handout.
Numeric Response
74. How many neutrons are present in an atom of the isotope
75. Calculate the number of neutrons in
U?
Pb.
76. What is the total number of subatomic particles in the nucleus of an atom of
77. What is the total number of subatomic particles in an atom of
Te?
Te?
78. What is the atomic number for an element with 41 neutrons and a mass number of 80?
79. How many electrons are in an atom of gallium?
80. What is the mass number for a silver atom that has 51 neutrons in its nucleus?
81. How many protons are present in the nuclei of the four known isotopes of iron?
82. What is the melting point of water in degrees Celsius?
83. What is the boiling point of water in degrees Celsius?
84. How many grams of liquid water are produced when 128 grams of ice melt?
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