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Semester 1 Final Review
Semester 1 Final Review
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Answers
1
The following reaction would be classified as
decomposition.
single replacement.
synthesis.
double replacement.
2
What is the SI base unit for measuring temperature?
degrees Centigrade
Kelvin
degrees Fahrenheit
degrees Celsius
3
The "end result" of a chemical reaction is known as the
products.
subscripts.
coefficients.
reactants.
4
Which of the following IS NOT an example of a crystalline solid?
All of these
Plastic
Sugar
Table Salt
5
The small number that tells how many atoms are present is known as the
product.
coefficient.
reactant.
subscript.
6
A material is ductile if it _____.
can be pulled or drawn into a long wire
can transfer heat or electricity to another metal
is a mixture of metal with at least one other element
can be hammered or rolled into flat sheets
7
What ion does Sulfur form?
-1
+3
+1
-2
8
What is the name of NaCl?
monosodium monochloride
sodium monochloride
monosodium chlorine
sodium chloride
9
How many valence electrons does oxygen have?
6
5
1
7
10
Which particles in atoms have a negative electric charge?
electrons
protons
neutrons
nucleus
11
Which of the following statements about metals is true?
Metals typically display a very low luster.
Metals are good insulators
Metals are found to right of the stair-step line on the periodic table.
Metals are able to be hammered into thin sheets.
12
This is the study of human behavior.
chemistry
natural sciences
biology
social sciences
13
A liquid turns to a solid through the process of
freezing.
vaporization.
melting.
sublimation.
14
A bond between a metal and a non-metal is called:
Metallic
Molecular
Ionic
Covalent
15
This is vaporization that occurs only on the surface of a liquid.
condensation
boiling
freezing
evaporation
16
Which state of matter has a definite volume, but will take the shape of its container?
Liquid
Gas
Plasma
Solid
17
The sun is made of mostly what element?
carbon
oxygen
hydrogen
iron
18
The elements that are not reactive are
halogens
metals
noble gases
elements in the carbon family
19
This is the state of matter where particles are only able to vibrate.
Solid
Plasma
Liquid
Gas
20
A block of lead will sink when added to water. This occurs because the lead
beats up the water on the way to the bottom.
is less dense than the water.
is more dense than the water.
has the same density as the water.
21
What is the chemical formula of carbon tetrachloride?
CCl
CCl4
CCl2
C4Cl
22
Fluorine, chlorine, bromine and iodine are part of a family called _____.
halogens
noble gases
alkali metals
metalloids
23
The "arrow" in a chemical equation means
equals.
yields.
turn.
stop.
24
Which state of matter CANNOT be classified as a fluid?
solid
liquid
gas
plasma
25
Temperature is a measure of
average kinetic energy.
chemical energy.
potential energy.
thermal energy.
26
Why would it be difficult to determine the properties of a new synthetic element?
The element would lack properties of ordinary elements
The element would not fit in the periodic table
The element's nuclei would break apart very quickly
The element would combine the properties of the nuclei
27
Anything with the ability to flow can be classified as
a solid.
lava.
a fluid.
a gas.
28
In the following equation, the subscript of H in the product H
2
O is
2
1
8
4
29
This is an educated guess.
an experiment
a hypothesis
an observation
an inference
30
In the following equation, the coefficient of the reactant O is
3
2
31
Melting is the change from
a liquid to a gas.
a gas to a liquid.
a solid to a liquid.
a liquid to a solid.
32
When applied to balancing equations, the law of conservation of mass tells us that the
mass of the products will always be more than the reactants.
mass of the reactants will always be more.
# atoms of an element must be = for products & reactants.
mass of the products will never equal mass of the reactants.
33
When the following equation is balanced, the coefficient for KOH is
2
1
3
4
34
Which of the following IS NOT a type of model that can be used in science?
a physical object
a mathematical expression
an event
an inference
35
How many mL is 63.4 L?
0.634 mL
0.0634 mL
6.34 mL
63,400 mL
36
This is the 3-dimensional pattern formed by ionic compounds.
metallic pattern
crysallis
crystal lattice
molecular substrate
37
If an atom has 15 electrons, how many protons will it have?
30
0
15
20
38
The following reaction would be classified as
single replacement.
decomposition.
synthesis.
double replacement.
39
This is the study of matter and how it interacts.
Botany
Physics
Biology
Chemistry
40
Which of the following is the SI unit for time?
minutes
days
hours
seconds
41
The following reaction would be classified as
single replacement.
double replacement.
decomposition.
synthesis.
42
Sodium has 11 protons, 12 neutrons and 11 electrons. What is it's mass number?
12
22
11
23
43
Which of the following is the correct conversion factor for days and weeks?
7 days: 7 weeks
1 day: 1 week
1 day: 7 weeks
7 days: 1 week
44
How many dg is 4.56 dag?
0.456 dg
45.6 dg
456 dg
4,560 dg
45
The following reaction would be classified as
decomposition.
single replacement.
synthesis.
double replacement.
46
What type of bond forms when oxygen(O) and bromine(Br) bond?
Ionic
Molecular
Metallic
covalent
47
1 dekaliter is larger than 1 deciliter.
True
False
48
How does the atomic mass of the elements change as you move from top to bottom on the table?
Stays the same
Mass decreases
Mass increases
49
The "beginning ingredients" in a chemical reaction are known as the
coefficients
products
subscripts
reactants
50
Which of the following is an accurate conversion factor?
1 foot: 12 inches
12 feet: 12 inches
1 feet: 1 inch
12 feet:1 inch
51
The conversion factor for relating months to years is 1 month:12 years.
False
True
52
Sodium has 11 protons, 12 neutrons and 11 electrons. What is it's atomic number?
22
12
11
23
53
Which type of bond forms when electrons are shared?
Covalent
None of these
Metallic
Ionic
54
2 reactants, one 65 g & one 15 g, combine to make one product. The mass of the product is
80 g
50 g
15 g
65 g
55
How does bond length relate to the strength of the bond?
Bonds are the same strength regardless of the length.
Bond length does not affect the strength.
Shorter bonds are stronger bonds.
Longer bonds are stronger bonds.
56
Which state of matter will take the shape and volume of its container?
Gas
Solid
Liquid
All of these
57
Mendeleev created the first periodic table by arranging the elements in order of _____.
decreasing atomic mass
increasing atomic mass
increasing melting points and densities
increasing atomic number
58
This type of equation is known as
synthesis.
double replacement.
single replacement.
decomposition.
59
The following reaction would be classified as
double replacement.
single replacement.
synthesis.
decomposition.
60
Which is the correct name for CaCl2
Calcium chloride
Calcium Chlorite
Calcium dichloride
Calcium chlorine
61
Chemistry is an example of a
fun time.
unnatural science.
social science.
natural science.
62
Which of the following is not a result of metallic bonding?
Ductility
Malleability
Conductivity
Brittleness
63
50 cm is how many mm?
5 mm
0.5 mm
5,000 mm
500 mm
64
How many cg are in 0.033 hg?
3,300 cg
33 cg
330 cg
3.3 cg
65
A gas turns to a liquid through the process of
condensation.
melting.
freezing.
vaporization.
66
The following reaction would be classified as
decomposition.
single replacement.
double replacement.
synthesis.
67
How many kg is 1,000 g?
100 kg
10 kg
0.1 kg
1 kg
68
In an endothermic process
energy is taken in.
energy is given off.
69
The elements in a group on the periodic table ____.
have similar properties
are in the same period
have the same atomic mass
have similar chemical symbols
70
This is the closeness of a measurement to the actual value.
Accuracy
Specificity
Precision
Exactness
71
The following reaction would be classified as
decomposition.
synthesis.
single replacement.
double replacement.
72
What is unique about noble gases?
form salts
Glow bright colors when electricity is added
exist as solid elements
Are very reactive
73
Which of the following is an example of a quantitative observation.
It is 3 degrees today.
It is frigid today.
It is cold today.
It is freezing today.
74
This is the attractive force between the surface of a liquid and a surrounding solid.
Surface Tension
Suction
Cohesive forces
Capillary Action
75
The number of valence electrons can be determined by
the average atomic mass.
the period number.
the atomic number.
the last digit of the group number.
76
An anion is formed by when an atom
loses electrons
gains electrons
loses protons
gains protons.
77
During a change of state, the temperature of a substance will remain the same.
False
True
78
This is the state of matter where particles are close together but are able to slide past one another.
gas
solid
liquid
plasma
79
Which of the following is an example of an exothermic process?
Condensation
Melting
Vaporization
Sublimation
80
How did Moseley change Mendeleev's periodic table?
He included chemical properties like bonding power.
He included physical properties like density.
He used atomic number instead of atomic mass.
He used atomic mass instead of atomic number.
81
A solid turns straight into a gas through the process of
deposition.
vaporization.
sublimation.
condensation.
82
Which of the following is an example of a derived unit?
meters/second
meters
Kelvin
kilograms
83
The kinetic molecular theory states that the particles in matter are
always stuck in place.
arranged in patterns.
arranged randomly.
always in motion.
84
What is a valence electron?
An electron in outermost energy level.
An electron in the nucleus.
The total number of electrons in an atom.
An electron in the innermost energy level.
85
Which type of bond forms when electrons are taken from one atom, and given to another?
Covalent
Ionic
Metallic
None of these
86
Which subatomic particle is largest in size?
electrons
neutrons
protons
87
A bond between two non-metals is called:
Ionic
Metallic
Covalent
Molecular
88
The law of conservation of mass states that mass
never changes its appearance.
is multiplied in every reaction.
cannot be transformed.
cannot be created or destroyed.
89
Which group contains the most elements?
non-metals
metals
metalloids
90
The following reaction would be classified as
decomposition.
double replacement.
synthesis.
single replacement.
91
What is the chemical formula for magnesium fluoride?
Mg2F2
Mg2F
MgF2
MgF
92
Which of the following statements about transition metals is true?
They include metals such as gold, silver and copper
They are always found combined with another element in nature.
They are extremely brittle.
They are the most reactive of all types of metals
93
In an atom, the number of protons equals the number of ____.
electrons
isotopes
nuclei
neutrons
94
Which group of elements share characteristics with both metals and non-metals?
salts
metalloids
lanthanides
halogens
95
Particles are randomly in arranged in --- solids.
amorphous
crystalline
96
The Greek prefix for the number 4 is
tri-
tetra-
hexa-
penta-
97
What type of bond will form between atoms of gold?
None of these
Ionic
Covalent
Metallic
98
The reactants in the following equation are
Cl
Na
NaCl
Na and Cl2
99
Which of the following is in the correct order from smallest unit to largest unit?
milli, deci, kilo
deci, kilo, milli
milli, kilo, deci
deci, milli, mega
100
A mixture of 2 or more metals, such as steel, is called
a hybrid.
an emulsion.
a crystal.
an alloy.
