Grade 11

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Grade 11 Objective 4
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1 What is the density of
this magnetic steel alloy? A 2.67 g/mL B
3.99 g/mL C 6.90 g/mL D 8.01 g/mL
3
2 Dr. Julians foam was most successful
in extinguishing oil fires. What are the most
likely physical characteristics of this foam? A
Less dense than oil and does not allow oxygen
in B Waterproof and contains flammable
materials C More viscous than water and
lighter than air D Brightly colored and more
porous than plastic
4
3 A sample of an element has a volume of
78.0 mL and a density of 1.85 g/mL. What is the
mass in grams of the sample? Record and bubble
in your answer to the nearest tenth on the answer
document.
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4 A block of maple wood with a volume of
405 cubic centimeters and a density of 0.67
g/cm3 is sawed in half. The density of the two
smaller blocks is now A one-fourth the
original density B one-half the original
density C two times the original density D
the same as the original density
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5 This pipette is filled with
a 20 NaOH solution. The solution is at 20C
and has a density of 1.23 g/mL. According to this
information, what is the mass of this NaOH
solution? A 3.88 g B 15.7 g C 23.9
g D 24.6 g
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6 Swimmers find that they can float more
easily in the ocean than in a freshwater pond.
The most likely reason for this phenomenon is
that the A viscosity of pond water is
greater than that of ocean water B density of
ocean water is higher than that of pond water C
temperature of pond water is lower than that of
ocean water D mass of ocean water is greater
than that of pond water
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7 Compared to 250 g of gaseous
nitrogen, 250 g of liquid nitrogen has greater
A volume B temperature C mass D
density
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8 The picture shows the
results of pouring a blue liquid into a clear
liquid and allowing the mixture to settle for
25 minutes. Compared to the clear liquid, the
blue liquid is more A massive B dense C
viscous D soluble
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9 The table shows properties of four
liquids that are insoluble in water. If the
four liquids are poured into an Erlenmeyer flask
containing water, which liquid will form a
layer below the water? A Q B R C S D
T
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10 A 500 mL quantity of vanilla ice cream has
a mass of 400 grams. The manufacturer then
bubbles air into the ice cream so that
its volume increases by 300 mL. What is the ice
creams approximate final density? F 0.30
g/cm3 G 0.50 g/cm3 H 0.80 g/cm3 J 1.30
g/cm
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11 A bar of soap produced by this soap-making
process normally sinks to the bottom of a
container of water. Which of these
processes could cause the bar of soap to float
in water? A Making grooves in the surface of
the thick paste B Adding air bubbles to the
thick paste C Letting the thick paste sit for
four days D Chilling the mold filled with the
thick paste
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12 As the viscosity of a liquid increases, the
liquid A conducts electricity B pours
more slowly C evaporates more quickly D
forms a precipitate
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13 Water normally boils at 100C at sea level
and at 97C on a North American mountaintop.
This difference in boiling points can be
explained by the difference between the
locations A ultraviolet light B air
pressure C gravitational force D thermal
energy
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14 The buoyant force that a fluid exerts on
objects is increased when there is an increase
in the fluids F acidity G clarity H
solubility J density
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15 The observation that an air bubble in water
rises to the surface is explained by the
principle of A viscosity B buoyancy C
interference D polarity
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16 Brown sugar consists of crystals of white
sugar coated with molasses. If brown sugar
hardens, it can be softened by heating. The
most likely reason brown sugar softens when
heated is that heat A increases the
moisture of sugar B decreases the volume of
molasses C increases the density of sugar D
decreases the viscosity of molasses
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17 A heat decomposes the
compound B the elements are volatile C
pressure increases D their ionic bond is
broken
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18 The correct formula for calcium
chloride is A CaCl B CaCl2 C
Ca2Cl D Ca2Cl3
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19 Which of the following groups
contains members with similar chemical
reactivity? A Li, Be, C B Be, Mg, Sr C
Sc, Y, Zr D C, N, O
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20 According to the periodic table,
which element most readily accepts
electrons? A Fluorine B Nitrogen C
Arsenic D Aluminum
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21 Elements in Group 16 of the periodic
table usually F form large molecules G
gain electrons when bonding H act like
metals J solidify at room temperature
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Al3 SO42 22 According to this
information, what is the chemical formula for
aluminum sulfate? A AlSO4 B
Al2(SO4)3 C Al3(SO4)2 D Al6SO4
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Calcium (Ca2) Chloride (Cl) ? Calcium
chloride 23 The chemical formula for
calcium chloride is F Ca2Cl G CaCl
H CaCl2 J Ca2Cl3
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24 An unidentified element has many of
the same physical and chemical properties as
magnesium and strontium but has a lower atomic
mass than either of these elements. What is the
most likely identity of this element? F
Sodium G Beryllium H Calcium J
Rubidium
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25 The elements from which of the
following groups are most likely to react with
potassium (K)? F Group 2 G Group 7 H
Group 13 J Group 17
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26 The elements of which of these groups
on the periodic table are most resistant to
forming compounds? A Group 1 B Group
9 C Group 14 D Group 18
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27 The bonding characteristics of oxygen are
most similar to the bonding characteristics of
A hydrogen B silicon C helium D
sulfur
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28 Which of these elements is most likely to
donate one electron? F Be G Cs H Rn J
He
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29 Alpha particles are one type of
radioactivity. These particles have a nucleus
of two protons and two neutrons but have no
orbital electrons. Based on this information,
it can be inferred that alpha particles are
positive ions of the element F actinium G
curium H radium J helium
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30 A certain atom has a nucleus containing six
protons and eight neutrons and has six
electrons orbiting the nucleus. This atom is a
form of the element A silicon B
carbon C magnesium D calcium
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31 Calcium ions play an important role in the
function of neurons in the brain. Elements that
are chemically similar to calcium can interfere
with the function of neurons. Which of the
following is most likely to imitate calciums
role in the function of neurons? F Sodium G
Potassium H Strontium J Rubidium
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oxo 32 The model above shows how an
unidentified element, X, forms covalent bonds
with oxygen. In which group on the periodic table
does Element X most likely belong? F Group
6 G Group 12 H Group 14 J Group 18
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33 In which model of the periodic table does the
shaded area show the location of elements that
require the least energy to lose one
electron? A C B D
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34 The ionic compounds that result
from combining Group 2 and Group 16 elements
have a 11 ratio because A Group 2 elements
are electrically neutral B Group 2 elements
have two valence electrons C Group 2 elements
contain neutrons in the nucleus D Group 2
contains more elements than other groups
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35 Silver bromide is a type of halide.
Elements from which group in the periodic table
are necessary to form halide compounds? A
Group 4 B Group 5 C Group 10 D Group 17
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36 Elements found in which shaded
area of this periodic table undergo the fewest
chemical reactions? A Q B R C S D T
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37 According to the periodic table, which of
these elements will form an ion with a 2
charge? F S G Mg H F J Rb
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38 The diagram shows
physical changes that occur in the water cycle.
Which of these shows condensation? A Q B
R C S D T
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39 Which process in the rock cycle is
most likely responsible for moon rocks being
converted to lunar soil? A Metamorphism B
Weathering C Sedimentation D Volcanism
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40 Which of these changes in rocks is a
physical change? A Acid rain damaging
marble B Iron in rock combining with oxygen
to form hematite C Carbonic acid weathering
limestone D An ice wedge shattering a slab of
shale
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41 Which of the following processes is
an example of a physical change associated with
an oak tree? A Decomposition of bark by
bracket fungi B Starches and sugars being
broken down during energy
production C Water and carbon dioxide being
converted to glucose D Evaporation of water
from the surfaces of leaves
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42 Compounds with the same chemical
composition may have different densities
because they A have differences in
reactivity B are able to bond with oxygen C
vary in solubility D exist in different
phases
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43 Limestone is a sedimentary rock consisting
mostly of calcium carbonate (CaCO3). Which
process is most likely to cause a chemical
change to limestone? F Freezing water
cracking limestone G Flowing water eroding a
limestone riverbed H Acid rain forming puddles
on limestone J Coastal waves dissolving
limestone sediments
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44 Which of the following is an example of a
chemical change? A Combustion of gasoline B
An apple being bitten C An ice cube being
swallowed D Absorption of a water molecule
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How Portland Cement Is Made
45 Portland cement is used to make concrete,
a very common construction material. Which
step in the production of portland cement
causes a chemical change? A W B X C
Y D Z
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46 Which of the following describes a
chemical change that J. B. van Helmont could
have observed? F Limestone combined with an
acid produces a gas. G Solid carbon dioxide
becomes a gas at room temperature. H Limestone
combined with sand results in a mixture. J
Diluting an acid with water produces a
solution.
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47 Which process best demonstrates a chemical
change in distilled water? A Freezing the
water B Separating the water into its
elements C Calculating the waters density D
Dissolving sugar in the water
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48 Which of these describes a chemical
change? F Frost disappears from a window in
the morning. G A decrease in temperature
reduces the volume of a gas. H Soot is formed
as a candle burns. J A cup of hot tea cools
down.
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49 In photography, which of these is an
example of a chemical change? F Light being
refracted by a camera lens G Adjusting a lens
to focus light H Halide granules being
activated by light J Allowing a certain
wavelength of light into the camera
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50 A sugar cube in a test tube is heated over
a Bunsen burner. The sugar cube turns black and
has less mass than before it was heated. These
changes occur because the sugar has A
melted B boiled C reacted chemically D
become hydrated
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51 When a 1-kilogram log was burned, 0.05
kilogram of ash was produced. The mass of the
ash is less than the mass of the log because
A wind carried away some matter before it
burned B some matter was converted to gases
that were released C combustion changed some
matter into energy D some matter was
decomposed by organisms in the soil
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K H2O ? KOH H2 52 What is the
coefficient for H2O when the above equation is
balanced? A 1 B 2 C 3 D 4
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53 According to the law of
conservation of mass, how much zinc was present
in the zinc carbonate? A 40 g B 88 g C
104 g D 256 g
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54 The chemical equation shows CaCO3
being heated. Which of these statements best
describes the mass of the products if 100 g of
CaCO3 is heated? A The difference in the
products masses is equal to the mass of
the CaCO3. B The sum of the products masses
is less than the mass of the CaCO3. C
The mass of each product is equal to the mass of
the CaCO3. D The sum of the products masses
equals the mass of the CaCO3.
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55 Which chemical equation supports the
law of conservation of mass? F 2H2O(l) ?
H2(g) O2(g) G Zn(s) HCl(aq) ? ZnCl2(aq)
H2(g) H Al4C3(s) H2O(l) ? CH4(g)
Al(OH)3(s) J CH4(g) 2O2(g) ? CO2(g)
2H2O(g)
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2Cu O2 ? 2CuO 56 When 127 g of copper
reacts with 32 g of oxygen gas to form copper
(II) oxide, no copper or oxygen is left over. How
much copper (II) oxide is produced? F 32
g G 95 g H 127 g J 159 g
58
Mg HCl ? MgCl2 H2 57 When the above
equation is balanced, the coefficient for
magnesium chloride is A 0 B 1 C
2 D 4
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58 If all the reactants in a chemical
reaction are completely used, which of the
following statements accurately describes the
relationship between the reactants and the
products? F The products must have a
different physical state than the
reactants. G The total mass of the reactants
must equal the total mass of the
products. H The reactants must contain more
complex molecules than the products
do. J The density of the reactants must equal
the density of the products.
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2C2H2(g) 5O2(g) ? 4CO2(g)
___ 59 Which additional product balances this
reaction? F 4OH(aq) G CH4(g) H
H2O2(g) J 2H2O(g)
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60 The mass of a rusty bicycle is found to be
slightly greater than the mass of the same
bicycle before it rusted. The change in
mass indicates that the rusting process A
is a physical change B involves an
energy-to-matter conversion C decreases the
density of the metal D involves metal bonding
with other atoms
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61 Aluminum metal and oxygen gas combine to
produce aluminum oxide (Al2O3). Which of these
is the balanced equation for this reaction? F
Al O2 ? Al2O3 G 2Al 2O2 ? 2Al2O3 H
2Al 3O2 ? 5Al2O3 J 4Al 3O2 ? 2Al2O3
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Reaction of Copper with Sulfur 62 Coppe
r (Cu) and sulfur (S) were heated in a covered
container. After the reaction was complete, the
unreacted sulfur was removed. The table
contains the results of the investigation. How
much sulfur, in grams, failed to react with the
copper? Record and bubble in your answer to the
nearest hundredth on the answer document.
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63 Which set of coefficients balances the
equation? F 3, 3, 1, 2 G 6, 1, 1, 3 H
3, 2, 1, 6 J 6, 2, 1, 6
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64 Which of these would support the idea that
mass is conserved in a reaction that produces a
gas as a product? A Heating the reactants to
ensure the reaction occurs in a gaseous
state B Subtracting the mass of the gas from
the mass of the solid and liquid products C
Mixing the reactants and measuring their total
mass D Trapping the gas and measuring its
mass
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65 When 50 mL of isopropyl alcohol (39.5 g) is
added to 50 mL of water (50 g), the mixture
will have a volume of 98 mL. What is the
mass in grams of this mixture? Record and
bubble in your answer to the nearest tenth on
the answer document.
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66 Liquid 1 and Liquid 2 react to produce a
solid and a gas. Which of the following
expressions correctly shows how to determine the
mass of the gas? F (mass of Liquid 1 mass
of Liquid 2) - (mass of solid) G (mass of
Liquid 1 mass of Liquid 2) (mass of
solid) H (mass of Liquid 1 mass of Liquid 2)
(mass of solid) J (mass of Liquid 1 - mass
of Liquid 2) (mass of solid)
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67 If the properties of water were to
change so that the solid form was denser than
the liquid form, organisms living in a cold
pond environment would be less likely to survive
because water would no longer F dissolve
enough oxygen from the air G produce
solutions containing vital nutrients H remain
neutral, instead becoming highly acidic J
produce a floating insulating layer of ice
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68 Fish survive through severe winters
because of the property of water that allows
water to F form chemical bonds as it
freezes, raising the water temperature
below the ice G increase in density while it
freezes, dissolving more oxygen from the
air H expand when it freezes, creating a
floating and insulating layer of ice J
precipitate vital nutrients when it freezes,
increasing the food supply
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69 Which characteristic of water best
explains its ability to dissolve a great
variety of materials? A Its transparency in
light B Its electrical conductivity C Its
physical state of matter D Its molecular
arrangement
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70 The diagram on the right
shows water molecules and ions from an NaCl
crystal. What is the most likely reason that
each water molecule is arranged so that the
oxygen part of the molecule faces a sodium
ion? F The oxygen in a water molecule
contains a partial negative charge. G Gravity
rotates the oxygen atoms to face the more-massive
sodium ions. H Hydrogen atoms create repulsive
forces with chloride ions. J Oxygen atoms form
covalent bonds with sodium ions.
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71 Water acts as a solvent of ionic compounds
because F water is liquid over a wide range
of temperatures G water molecules are
polar H water is found in three states of
matter J water takes the shape of its
container
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72 Which of these remains the same while
water molecules go through the water
cycle? F The ratio of oxygen to hydrogen in
the molecules G The rate of vibration of the
molecules H The kinds of dissolved substances
between the molecules J The amount of energy
the molecules can absorb
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73 The graph shows the
concentration of ions found in the water of the
Dead Sea. Which property of water is
responsible for the dissociation of salts that
produces the ion concentrations shown in the
graph? A Chemical stability B High
polarity C Low melting point D High
freezing point
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74 The structure of pure water makes it a
good F solvent G catalyst H
conductor J nutrient
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75 What is the reason that tap water will
conduct electricity but pure water will not? A
Pure water has nonpolar bonds. B Tap water
has dissolved ions. C Pure water has a
neutral pH. D Tap water has a lower density.
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76 The solute most likely to create a
solution that produces the current reading
shown on the ammeter is A sucrose,
C12H22O11 B ethyl alcohol, C2H5OH C
oxygen, O2 D nitric acid, HNO3
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77 Two clear solutions are placed in
separate beakers. The first solution has a pH of
4, and the pH of the second solution is unknown.
If the two solutions are mixed and the resulting
pH is 5, the second solution must have A
fewer suspended solids B a lower
temperature C more dissolved salt (NaCl)
particles D a higher concentration of OH
ions
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78 Bathwater normally has electrolytic
behaviors even though distilled water does not.
This is because bathwater F contains
isotopes of hydrogen G has been heated H
is separated into H and OH ions J contains
dissolved minerals
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79 In this apparatus, the
seawater is an example of a F strong
electrolyte G weak acid H
nonelectrolyte J strong base
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80 Dissolving salt in water increases the
conductivity of the solution because the F
alt gives the solution a net negative charge G
salt ions bond with the available water
molecules H solution has an increase in
kinetic energy J concentration of ions in the
solution increases
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81 Which of these
statements is supported by these data? A
More KNO3 will dissolve than KBr at 0C. B
Temperature has little effect on the water
solubility of NaCl. C KBr is insoluble in
water at low temperatures. D Temperature
increases lower the solubility of NaClO3 in water.
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82 When deep-sea divers explore the ocean
at great depths, nitrogen becomes 10 to 100
times more soluble in the blood. A disorder
called the bends occurs when nitrogen bubbles out
of the blood because of a rapid A
decrease in pressure B increase in salt
concentration C decrease in temperature D
increase in blood pH
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83 A 0.2 g crystal of gypsum dissolves
very slowly in 100 mL of water while the water
is stirred. Which of these would cause the gypsum
to dissolve faster? F Decreasing the water
temperature G Stopping the stirring H
Lowering the air pressure J Crushing the
crystal
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84 All of these can affect the rate at
which a solid dissolves in water except A
decreasing air pressure B stirring the
water C increasing the temperature of the
water D using larger crystals of the solid
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85 Over time an open soft drink will lose
carbonation (dissolved CO2). Which of these
allows the CO2 to remain in solution the
longest? A Reduced air pressure B
Exposure to direct sunlight C Increased air
currents D Cooler temperatures
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86 The table shows temperature
and pressure in four containers holding the same
amount of water. According to the table, in
which container can the most sodium chloride be
dissolved in the water? A Q B R C
S D T
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87 Power plants that discharge warm water into
rivers have a negative effect on aquatic life.
This is because the higher water temperature
A increases the pressure of the river
water B increases the pH value of the river
water C decreases sediment solubility in the
river water D decreases the dissolved oxygen
in the river water
89
F
H G J
90
Properties of Some Solutions 89 The
table shows data from an investigation designed
to find a liquid solution that is both an acid
and a strong electrolyte. Based on the data, a
solution that is both an acid and a strong
electrolyte is A Solution 1 B Solution
2 C Solution 3 D Solution 4
91
MTBE Solubility 90 MTBE is a
gasoline additive that has entered some
groundwater supplies. According to the table
above, which of the following water temperatures
would allow 79 grams of MTBE to dissolve in 1
liter of water? F 0C G 10C H
30C J 40C
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Grade 11 Objective 4 Answer Key
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