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IPC Final Exam Review
Indicate the answer choice that best completes the statement or answers the question.
1. All substances are built from__________.
a.
compound
b.
oxygen
c.
metals
d.
atoms
2. About ______ elements are found on Earth.
a.
9
b.
90
c.
900
d.
9000
3. A(n) ______ is a homogeneous mixture of particles so small they cannot be seen without microscopes and will never settle to the bottom of their container.
a.
solution
b.
element
c.
molecule
d.
plasma
4. A(n) ______ is a mixture that settles upon standing.
a.
solution
b.
colloid
c.
suspension
d.
element
5. A(n) ______ is a mixture that does not scatter light.
a.
solution
b.
colloid
c.
suspension
d.
element
6. Any characteristic of a material that you can observe without changing the identity of the substances that make the material is a(n) ______.
a.
physical property
b.
chemical property
c.
invisible property
d.
none of these
7. A change in size, shape, or state of matter is called a(n) ______ change.
a.
physical
b.
chemical
c.
atomic
d.
impossible
8. The process for separating substances in a mixture by evaporating a liquid and recondensing its vapor is called ______.
a.
precipitation
b.
sifting
c.
distribution
d.
distillation
9. A(n) ______ is not homogeneous.
a.
suspension
b.
element
c.
compound
d.
solution
10. The scattering of light by colloids is called ______.
a.
the Tyndall effect
b.
conservation
c.
air pollution
d.
suspension
11. Smoke is an example of a ______.
a.
substance
b.
solution
c.
colloid
d.
suspension
12. Three examples of physical changes are ______.
a.
freezing of water, evaporation of gasoline, and rusting of a nail
b.
boiling of water, bursting of a balloon, and melting of a candle
c.
sawing of wood, crushing of a can, and toasting a marshmallow
d.
burning of gasoline, rotting of an egg, and exploding of fireworks
13. The color of ink is a ______.
a.
chemical property
b.
physical property
c.
chemical change
d.
physical change
14. When two or more substances are combined so that each substance maintains its own properties, the result is a(n) ______.
a.
chemical change
b.
element
c.
compound
d.
mixture
15. ______ is another name for a homogeneous mixture.
a.
Suspension
b.
Substance
c.
Solution
d.
Liquid
16. When gasoline is burned in an engine, ______.
a.
gasoline evaporates
b.
new substances are formed
c.
mass is lost
d.
mass is gained
17. A(n) ______ is matter that is composed of one type of atom.
a.
compound
b.
mixture
c.
element
d.
molecule
18. The smallest piece of an element that still retains the properties of the element is a(n) ______.
a.
atom
b.
molecule
c.
compound
d.
plasma
19. The nucleus of an atom is ______ charged.
a.
positively
b.
negatively
c.
variably
d.
none of these
20. Neutrons have ______ charge.
a.
positive
b.
negative
c.
variable
d.
no
21. Electrons have ______ charge.
a.
positive
b.
negative
c.
variable
d.
no
22. Each energy level of an atom has a maximum number of ______ it can hold.
a.
neutrons
b.
quarks
c.
protons
d.
electrons
23. Dot diagrams are used to represent ______.
a.
the structure of the nucleus
b.
atomic number
c.
isotopes
d.
outer electrons
24. Particles of matter that make up protons and neutrons are ______.
a.
electrons
b.
isotopes
c.
atoms
d.
quarks
25. Protons have ______ charge.
a.
positive
b.
negative
c.
variable
d.
no
26. A chemical symbol represents the ______of an element.
a.
name
b.
structure
c.
reaction
d.
type
27. Horizontal rows of the periodic table are called ______.
a.
groups
b.
families
c.
clusters
d.
periods
28. Atoms of the same element with different numbers of neutrons are called ______.
a.
metalloids
b.
radioactive
c.
transition elements
d.
isotopes
29. Elements in groups 3 through 12 are called ______.
a.
metalloids
b.
transition elements
c.
noble gases
d.
isotopes
30. A certain atom has 26 protons, 26 electrons, and 30 neutrons. Its mass number is ______.
a.
26
b.
30
c.
52
d.
56
31. _____ is the only metal that is not solid at room temperature.
a.
Steel
b.
Aluminum
c.
Copper
d.
Mercury
32. When metals combine with nonmetals, the atoms of the metals tend to lose electrons, forming _____ bonds.
a.
ionic
b.
covalent
c.
triple
d.
unbreakable
33. In _____ bonding, positively charged metallic ions are surrounded by a cloud of electrons.
a.
ionic
b.
covalent
c.
triple
d.
metallic
34. A(n) _____ element is one in which the nucleus breaks down and gives off particles and energy.
a.
stable
b.
gaseous
c.
metallic
d.
radioactive
35. Elements in Groups 3 through 12 on the periodic table are known as _____ elements.
a.
gaseous
b.
noble
c.
radioactive
d.
transition
36. The two rows of elements that seem to be disconnected from the rest of the periodic table are the _____.
a.
nonmetals
b.
halogens
c.
noble gases
d.
inner transition metals
37. An allotrope of carbon that is soft and can be used as a lubricant is _____.
a.
silicon
b.
diamond
c.
sand
d.
graphite
38. The process by which a solid changes directly to a gas without first becoming a liquid is called _____.
a.
condensation
b.
ionization
c.
sublimation
d.
evaporation
39. When hydrogen reacts with active metals, it _____.
a.
shares electrons
b.
gains on electron
c.
loses one electron
d.
loses two electron
40. Different forms of the same element that have different properties because of different atom arrangements are called _____.
a.
allotropes
b.
carbons
c.
silicons
d.
graphites
41. At room temperature, most metals are _____.
a.
liquids
b.
solids
c.
radioactive
d.
gases
42. An allotrope of carbon that is hard and is often used in jewelry is ______.
a.
silver
b.
diamond
c.
quartz
d.
graphite
43. Metals can be used as wire because they are _____.
a.
ductile
b.
malleable
c.
shinny
d.
alloys
44. A group of elements that have two electrons in its outer energy level is the ______.
a.
alkaline earth metals
b.
halogens
c.
alkali metals
d.
actinides
45. Synthetic elements are found in which of the following groups?
a.
actinides
b.
alkali metals
c.
oxides
d.
halogens
46. Hydrogen is grouped with the alkali metals because it _____.
a.
is a metal
b.
has one electron in its outer energy level
c.
it is a gas
d.
does not readily form compounds
47. Elements that lie along the stair-step line of the periodic table are _____.
a.
liquids
b.
metals
c.
metalloids
d.
radioactive
48. Copper, sulfur, and oxygen are examples of ______.
a.
elements
b.
compounds
c.
mixtures
d.
colloids
49. A chemical ______ tells what elements a compound contains and the exact number of the atoms of each element in a unit of that compound.
a.
formula
b.
table
c.
dot diagram
d.
chart
50. H2O is also known as ______.
a.
carbon
b.
mercury
c.
nickel
d.
water
51. A chemical ______ is the force that holds atoms together in a compound.
a.
bond
b.
element
c.
compound
d.
formula
52. A charged particle is known as a(n) ______.
a.
plasma
b.
gas
c.
ion
d.
neutron
53. The attraction that forms between atoms when they share electrons is known as a(n) ______ bond.
a.
ionic
b.
covalent
c.
simple
d.
net
54. The elements that make up a compound and the number of atoms of each element in a unit of the compound can be shown in a ______.
a.
chemical symbol
b.
chemical formula
c.
subscript
d.
subscript
55. A group of atoms that acts together as one charged atom is a ______.
a.
polyatomic ion
b.
negative ion
c.
molecule
d.
crystal
56. In chemical formulas, the number of atoms in a unit of the compound is shown by numbers called ______.
a.
oxidation numbers
b.
superscripts
c.
hydrates
d.
subscripts
57. A chemical bond that occurs when atoms share electrons is a(n) ______ bond.
a.
ionic
b.
covalent
c.
polyatomic
d.
magnetic
58. The name given to the number of electrons an atom gains, loses, or shares is the ______.
a.
ionic number
b.
atomic number
c.
oxidation number
d.
atomic mass
59. How many electrons are needed in the outer energy levels of most atoms for the atom to be chemically stable?
a.
2
b.
4
c.
6
d.
8
60. The sum of the oxidation numbers in a neutral compound is always ______.
a.
one
b.
zero
c.
a positive number
d.
a negative number
61. Why do the noble gases not form compounds readily?
a.
They have no electrons.
b.
They have empty outer energy levels.
c.
They have seven electrons in their outer energy levels.
d.
Their outer energy levels are completely filled with electrons.
62. What is the name of the compound with the formula NaCl?
a.
sodium chloride
b.
chlorine sodiate
c.
sodium dichloride
d.
sodium chlorate
63. How many hydrogen atoms are present in one molecule of ammonium acetate, NH4C2H3O2?
a.
3
b.
4
c.
7
d.
11
64. The oxidation number of an atom is shown with a ______.
a.
subscript
b.
positive number
c.
superscript
d.
negative number
65. A(n) _____ is a mixture that has the same composition, color, and density throughout.
a.
element
b.
solution
c.
mixture
d.
plasma
66. If a cube is split in half, the surface area of the pieces will be _____ that of the cube.
a.
greater than
b.
less than
c.
the same as
d.
none of these
67. A dilute solution has _____ of solute in the solvent.
a.
a large amount
b.
a small amount
c.
an unlimited amount
d.
none of these
68. _____ molecules have a positive area and a negative area.
a.
Polar
b.
Nonpolar
c.
Organic
d.
Gaseous
69. _____ is the maximum amount of a solute that can be dissolved in a given amount of solvent at a given temperature.
a.
Solubility
b.
Volume
c.
Density
d.
A solution
70. A solution that contains all the solute it can at a given temperature is called _____.
a.
filled
b.
calcified
c.
unsaturated
d.
saturated
71. In a solution, the substance that is being dissolved is the _____.
a.
solute
b.
solvent
c.
liquid
d.
gas
72. The air that you breathe is an example of a(n) _____ solution.
a.
gaseous
b.
solid
c.
liquid
d.
amalgam
73. In soda pop, the solvent would be the _____.
a.
water
b.
carbon dioxide
c.
sugar
d.
flavoring
74. A substance that does not conduct an electric current when it forms a solution is a(n) _____.
a.
electrolyte
b.
nonelectrolyte
c.
polar substance
d.
salt
75. The process by which the particles in a crystal are separated and drawn into solution by water is called _____.
a.
ionization
b.
dissociation
c.
polarity
d.
saturation
76. Increasing the surface area of a solid _____.
a.
slows the speed of dissolving
b.
has no effect on the speed of dissolving
c.
increases the speed of dissolving
d.
causes the solid to ionize
77. The solubility of a gas in a liquid occurs faster if the liquid is _____.
a.
heated
b.
cooled
c.
under low pressure
d.
an electrolyte
78. The concentration of a solution that contains a large amount of solute in the solvent could be described as _____.
a.
unsaturated
b.
polar
c.
concentrated
d.
dilute
79. An alloy is an example of a _____ solution.
a.
gaseous
b.
liquid
c.
solid
d.
dilute
80. Which of the following will speed up the dissolving of a solid solute in water?
a.
Stir the solution.
b.
Cool the solution.
c.
Grind up the solvent.
d.
Freeze the solute.
81. Water is sometimes referred to as the universal solvent because _____.
a.
it has no separated positive and negative areas
b.
it is a small molecule and can fit easily among the molecules of many solutes.
c.
it has a polar and a nonpolar end
d.
its molecules can slip easily among molecules of a nonpolar solvent
82. A(n) _____ reaction is a change in which one or more substances are converted into new substances.
a.
chemical
b.
physical
c.
state
d.
electrical
83. The substances that react are called _____.
a.
nuclear reactors
b.
elements
c.
compounds
d.
reactants
84. The new substances produced in a reaction are called _____.
a.
elements
b.
compounds
c.
products
d.
reactants
85. Numbers to the left of formulas for reactants are called _____.
a.
superscripts
b.
coefficients
c.
elements
d.
formulas
86. A(n) _____ chemical equation has the same number of atoms of each element on both sides.
a.
false
b.
balanced
c.
imbalanced
d.
physical
87. Each substance to the right of the arrow in a chemical equation is a ______.
a.
catalyst.
b.
precipitate.
c.
reactant.
d.
product.
88. Each substance on the left side of the arrow in a chemical equation is a ______.
a.
reactant.
b.
product.
c.
coefficient.
d.
catalyst.
89. An example of a balanced chemical equation is ______.
a.
AgNO3 + NaCl→.4AgCl + 2NaNO3
b.
2AgNO3 +2NaCl.→3AgCl + 2NaNO3.
c.
AgNO3 + NaCl→.AgCl+ NaNO3.
d.
AgNO3 + 2NaCl + AgCl→AgCl +3NaNO3.
90. According to the law of conservation of mass, how does the mass of the products in a chemical reaction compare with the mass of the reactants?
a.
The mass of the products is greater.
b.
The mass of the reactants is greater.
c.
There is no relationship.
d.
The masses are equal.
Match each item with the correct term.
a.
positive charge
b.
negative charge
c.
no charge
91. proton
92. neutron
93. electron
Match each term with the correct description below.
a.
electron
b.
nucleus
c.
positive ion
d.
negative ion
e.
ionic bond
f.
covalent bond
g.
polar molecule
h.
compound
i.
symbol
j.
formula
k.
molecule
l.
subscript
94. positively charged center of atom
95. a charged atom that has gained one or more electrons
96. positive ion and negative ion joined together
97. represents an element
98. neutral particle formed when atoms share electrons
99. substance that contains two or more elements
100. particle in which electrons are shared unequally
101. combination of symbols
102. represents number of atoms
103. a charged atom that has lost one or more electrons
104. negative particle in an atom
105. atoms joined together by sharing electrons
Match the properties with their characteristics.
a.
lustrous
b.
malleable
c.
ductile
106. reflects light
107. can be hammered or rolled into sheets
108. can be drawn into wires
Match each item with the correct description below.
a.
solvent
b.
solute
c.
solution
d.
unsaturated
e.
supersaturated
f.
saturated
109. the substance being dissolved
110. the substance doing the dissolving
111. a mixture that has the same composition throughout
112. can dissolve more solute at a given temperature
113. contains all the solute it can hold at a given temperature
114. contains the most solute possible
115. Coffee has a pH of about 5. Coffee is a ____.
a.
strong acid
b.
Strong base
c.
Weak acid
d.
Weak base
116. A ____ is a compound formed in solution from the negative ion of an acid and the positive ion of a base.
a.
detergent
b.
glycerin
c.
salt
d.
soap
117. A bitter taste and a slippery feel are clues that a solution is probably a(n) ____.
a.
acid
b.
base
c.
hydrate
d.
salt
118. Ammonia is a weak base because it produces ____ ions in solution.
a.
strong
b.
weak
c.
only a few
d.
many
119. A(n) ____ is a substance that produces H+ ions in a water solution.
a.
acid
b.
base
c.
salt
d.
alcohol
120. ____ of a solution refers to the ease with which an acid or base forms ions in solution.
a.
Acidity
b.
Concentration
c.
pH
d.
Strength
121. ____ measures how acidic or basic a substance is.
a.
An ester
b.
A base
c.
pH
d.
The hydronium ion
122. ____ change color in the presence of an acid or a base.
a.
Acids
b.
Glycerins
c.
Buffers
d.
Indicators
123. One physical property of acids is a _____.
a.
slippery feel
b.
pink color
c.
sour taste
d.
presence of hydrogen
124. In a ____ reaction, an acid and a base produce salt and water molecules.
a.
decomposition
b.
neutralization
c.
dilute
d.
concentrated
125. A(n) ____ is a substance that produces OH– ions in a solution.
a.
acid
b.
base
c.
salt
d.
alcohol
126. pH measures the ____ of hydronium ions in a solution.
a.
versatility
b.
neutralization
c.
strength
d.
concentration
127. A base that only partly ionizes in a solution is a ____ base.
a.
concentrated
b.
dilute
c.
strong
d.
Weak
128. H3O+ units are also known as ____.
a.
hydrogen ions
b.
hydronium ions
c.
hydroxide ions
d.
hydroxyl groups
129. A process that uses a solution of known concentration to find the concentration of another solution is called ____.
a.
hydration
b.
neutralization
c.
ionization
d.
titration
130. An acidic solution would have a pH of _____.
a.
less than 7
b.
more than 7
c.
7 or above
d.
7 or below
131. The pH scale allows scientists to define the acidity of a substance on a scale of _____.
a.
0-7
b.
0-14
c.
1-7
d.
1-14
132. A basic solution contains more _____ ions than hydrogen.
a.
oxygen
b.
nitrogen
c.
hydroxide
d.
sulfide
133. In a titration, the ____ is the solution for which the concentration is known.
a.
indicator
b.
hydrate
c.
normal solution
d.
standard solution
134. A solution that contains equal concentrations of hydrogen and hydroxide ions is _____.
a.
an acid
b.
a base
c.
neutral
d.
ionized
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