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WorksheetsPS Benchmark 2 Study Guide
Total questions: 80
Worksheet time: 40mins
Name
Class
Date
1.
Classify lemon juice, which has a pH of 2.
a)
acidic
b)
basic
c)
neutral
d)
cannot be determined
2.
Classify oven cleaner, which has a pH of 13.
a)
acidic
b)
basic
c)
neutral
d)
cannot be determined
3.
Classify pure water, which has a pH of 7.
a)
acidic
b)
basic
c)
neutral
d)
cannot be determined
4.
What property can only be observed when a substance is transformed into a different substance in a chemical reaction?
a)
physical property
b)
chemical property
c)
acidic property
d)
phase change
5.
Which of the following is a chemical property?
a)
shape
b)
color
c)
reactivity
d)
melting point
6.
How are elements on the periodic table arranged?
a)
increasing atomic number
b)
increasing atomic mass
c)
year of discovery
d)
alphabetical
7.
Carbon has an atomic number of 6. Nitrogen is to the right of carbon on the periodic table. Without looking at your periodic table, what is the atomic number of nitrogen?
a)
5
b)
6
c)
7
d)
cannot be determined
8.
What is the overall charge of the nucleus?
a)
positive
b)
negative
c)
neutral
d)
cannot be determined
9.
What is a valence electron?
a)
total number of electrons
b)
electrons in the innermost shell or level
c)
electrons in the outermost shell or level
d)
overall charge of an ion
10.
How many valence electrons does an atom need to be stable?
a)
6
b)
8
c)
10
d)
18
11.
Which of the following is not true about groups & periods on the periodic table?
a)
groups are columns
b)
periods are rows
c)
elements in the same group have similar properties
d)
group number tells you how many electron energy lvels
12.
What does the period number of an element tell you?
a)
number of protons
b)
number of valence electrons
c)
number of electron energy levels
d)
mass number
13.
The mass number is the sum of which subatomic particles?
a)
protons + neutrons
b)
protons + electrons
c)
neutrons + electrons
d)
protons + neutrons + electrons
14.
When carbon forms a bond, how many electrons will it gain to have a full outer shell?
a)
2
b)
4
c)
6
d)
8
15.
What is the overall charge of an ion after it has gained 4 valence electrons?
a)
+2
b)
-2
c)
+4
d)
-4
16.
How many valence electrons will an atom of an element in group 16 have?
a)
2
b)
6
c)
8
d)
16
17.
How many electrons will an atom of an element in group 2 gain or lose when bonding?
a)
gain 2 electrons
b)
lose 2 electrons
c)
gain 6 electrons
d)
lose 6 electrons
18.
How many electrons will an atom of an element in group 17 gain or lose when bonding?
a)
gain 1 electron
b)
lose 1 electron
c)
gain 7 electrons
d)
lose 7 electrons
19.
On the periodic table, on which side of the stair step line are nonmetals located?
a)
left
b)
right
c)
on the stair step
d)
cannot be determined
20.
Do metals tend to gain or lose electrons when they form ionic bonds?
a)
gain
b)
lose
c)
neither
d)
cannot be determined
21.
Do nonmetals tend to gain or lose electrons when they form ionic bonds?
a)
gain
b)
lose
c)
neither
d)
cannot be determined
22.
Do metals tend to become positively or negatively charged ions?
a)
positive
b)
negative
c)
neutral
d)
cannot be determined
23.
Do nonmetals tend to become positively or negatively charged ions?
a)
positive
b)
negative
c)
neutral
d)
cannot be determined
24.
What is the electrical charge of a proton?
a)
positive
b)
negative
c)
neutral
d)
cannot be determined
25.
What is the electrical charge of a neutron?
a)
positive
b)
negative
c)
neutral
d)
cannot be determined
26.
What is the electrical charge of an electron?
a)
positive
b)
negative
c)
neutral
d)
cannot be determined
27.
Where in the atom are protons located?
a)
nucleus
b)
electron cloud
c)
fixed orbitals
d)
cannot be determined
28.
Where in the atom are neutrons located?
a)
nucleus
b)
electron cloud
c)
fixed orbitals
d)
cannot be determined
29.
Where in the atom are electrons located?
a)
nucleus
b)
electron cloud
c)
fixed orbitals
d)
cannot be determined
30.
What is the overall charge of the nucleus?
a)
positive
b)
negative
c)
neutral
d)
cannot be determined
31.
What is the overall charge of an atom?
a)
positive
b)
negative
c)
neutral
d)
cannot be determined
32.
What type of bond forms when elements transfer electrons?
a)
ionic
b)
covalent
c)
metallic
d)
none of these
33.
What type of bond forms when elements share electrons?
a)
ionic
b)
covalent
c)
metallic
d)
none of these
34.
Which of the following is not a use of radioactivity?
a)
nuclear power
b)
smoke detectors
c)
canary glass
d)
cooking
35.
Does the figure show nuclear fission or nuclear fusion, and why?
a)
fission, because a nucleus splits into smaller nuclei
b)
fusion, because a nucleus splits into smaller nuclei
c)
fission, because 2 nuclei combine to form a larger nucleus
d)
fusion, because 2 nuclei combine to form a larger nucleus
36.
What type of bond is formed between a metal and a nonmetal?
a)
ionic
b)
covalent
c)
metallic
d)
none of these
37.
What type of bond is formed between 2 nonmetals?
a)
ionic
b)
covalent
c)
metallic
d)
none of these
38.
When do you use prefixes when naming compounds?
a)
ionic compounds only
b)
covalent compounds only
c)
both ionic & covalent compounds
d)
neither ionic nor covalent compounds
39.
Using the figure, what is the chemical formula for water?
a)
H2O
b)
HO2
c)
H2O2
d)
HO
40.
Using the figure, what is the chemical formula for ammonia?
a)
NH3
b)
N3H
c)
HN3
d)
NH
41.
Using the figure, what is the chemical formula for methane?
a)
CH
b)
C4H
c)
CH4
d)
C4H4
42.
What number tells you the number of protons of an element?
a)
atomic number
b)
mass number
c)
mass number - atomic number
d)
period number
43.
What number tells you the number of electrons of an element?
a)
atomic number
b)
mass number
c)
mass number - atomic number
d)
period number
44.
What number tells you the number of neutrons of an element?
a)
atomic number
b)
mass number
c)
mass number - atomic number
d)
period number
45.
What is the variable that an experimenter changes from test subject to test subject, that causes something to happen?
a)
independent
b)
dependent
c)
constant
d)
control
46.
What is the variable that an experimenter measures after to an experiment, to find out if there was an effect?
a)
independent
b)
dependent
c)
constant
d)
control
47.
What is the test group that is not exposed to the independent variable?
a)
experimental
b)
dependent
c)
constant
d)
control
48.
What is the name of the physical property of being able to be pulled into wires?
a)
brittle
b)
ductile
c)
malleable
d)
viscous
49.
What is the name of the physical property of being able to be pulled into wires?
a)
brittle
b)
ductile
c)
malleable
d)
viscous
50.
What is the name of the physical property of being able to be pulled into wires?
a)
brittle
b)
ductile
c)
malleable
d)
viscous
51.
What is the name of the physical property of being able to be hammered into sheets?
a)
brittle
b)
ductile
c)
malleable
d)
viscous
52.
What kinds of elements are typically ductile & malleable?
a)
metals
b)
nonmetals
c)
metalloids
d)
none of these
53.
What did Neils Bohr contribute to atomic theory?
a)
discovered the atom
b)
the nucleus is positively charged
c)
electrons are in fixed energy levels
d)
electrons are in an electron cloud
54.
How many electrons fit in the 1st and 2nd shells?
a)
2 electrons in both 1st & 2nd shell
b)
2 electrons in 1st shell & 8 electrons in 2nd shell
c)
8 electrons in both 1st & 2nd shell
d)
8 electrons in 1st shell & 12 electrons in 2nd shell
55.
Which of the following is not part of the Law of Conservation of Matter?
a)
matter can't be created or destroyed
b)
chemical equations must be balanced
c)
atoms in a chemical reaction rearrange
d)
mass can be produced in a reaction
56.
In what type of reaction do 2 or more reactants come to gether to form 1 product?
a)
combination
b)
decomposition
c)
single replacement
d)
double replacement
57.
In what type of reaction does 1 reactant break down into 2 or more products?
a)
combination
b)
decomposition
c)
single replacement
d)
double replacement
58.
In what type of reaction does a solo element switch with another in a compound?
a)
combination
b)
decomposition
c)
single replacement
d)
double replacement
59.
In what type of reaction do elements in compounds "change partners"?
a)
combination
b)
decomposition
c)
single replacement
d)
double replacement
60.
Is the chemical equation correctly balanced? If not, why not?
a)
yes
b)
no, Cu is unbalanced
c)
no, Ag is unbalanced
d)
no, C is unbalanced
61.
Is the chemical equation correctly balanced? If not, why not?
a)
yes
b)
no, Ca is unbalanced
c)
no, H is unbalanced
d)
no, S is unbalanced
62.
Is the chemical equation correctly balanced? If not, why not?
a)
yes
b)
no, H is unbalanced
c)
no, Na is unbalanced
d)
no, S is unbalanced
63.
What is the name of the compound KCl?
a)
potassium chlorine
b)
potassium chloride
c)
potassium monochloride
d)
monopotassium monochloride
64.
What is the name of the compound P4S3?
a)
phosphorous sulfur
b)
phosphorous sulfide
c)
tetraphosphorous trisulfide
d)
phosphorous trisulfide
65.
What is the name of the compound N2O?
a)
nitrogen oxygen
b)
nitrogen oxide
c)
dinitrogen monoxide
d)
nitrogen monoxide
66.
What is the name of the compound NaBr?
a)
sodium bromine
b)
sodium bromide
c)
monosodium monobromide
d)
sodium monobromide
67.
What is the name of the compound PCl5?
a)
phosphorous chlorine
b)
phosphorous chloride
c)
monophosphorous pentachloride
d)
phosphorous pentachloride
68.
What is the name of the compound MgF2?
a)
magnesium fluorine
b)
magneisum fluoride
c)
monomagnesium difluoride
d)
magnesium difluoride
69.
What is the chemical formula of selenium hexachloride?
a)
SeCl
b)
Se6Cl
c)
SeCl6
d)
6SeCl
70.
What is the chemical formula of carbon tetrabromide?
a)
CBr
b)
C4Br
c)
CBr4
d)
4CBr
71.
What is the chemical formula of magnesium fluoride?
a)
MgF
b)
MgF2
c)
Mg2F
d)
2MgF
72.
What is the chemical formula of lithium phosphide?
a)
LiP
b)
Li2P3
c)
Li3P
d)
LiP3
73.
What is a chemical that helps a reaction take place faster but does not change itself?
a)
reactant
b)
product
c)
catalyst
d)
factor
74.
A student’s hypothesis is that adding food coloring to his reaction will decrease the time it takes to react. In test tube A, he does not add the food coloring, and the reaction time is 68 seconds. In test tube B, he does add the food coloring, and the reaction time is 45 seconds. What is the independent variable?
a)
food coloring
b)
time to react
c)
test tube A
d)
test tube B
75.
A student’s hypothesis is that adding food coloring to his reaction will decrease the time it takes to react. In test tube A, he does not add the food coloring, and the reaction time is 68 seconds. In test tube B, he does add the food coloring, and the reaction time is 45 seconds. What is the dependent variable?
a)
food coloring
b)
time to react
c)
test tube A
d)
test tube B
76.
A student’s hypothesis is that adding food coloring to his reaction will decrease the time it takes to react. In test tube A, he does not add the food coloring, and the reaction time is 68 seconds. In test tube B, he does add the food coloring, and the reaction time is 45 seconds. What is the control group?
a)
food coloring
b)
time to react
c)
test tube A
d)
test tube B
77.
A student’s hypothesis is that adding food coloring to his reaction will decrease the time it takes to react. In test tube A, he does not add the food coloring, and the reaction time is 68 seconds. In test tube B, he does add the food coloring, and the reaction time is 45 seconds. What is the experimental group?
a)
food coloring
b)
time to react
c)
test tube A
d)
test tube B
78.
A student’s hypothesis is that adding food coloring to his reaction will decrease the time it takes to react. In test tube A, he does not add the food coloring, and the reaction time is 68 seconds. In test tube B, he does add the food coloring, and the reaction time is 45 seconds. Which test tube had the greater reaction rate, and why?
a)
test tube A, because the time is greater
b)
test tube B, because the time is greater
c)
test tube A, because the time is less
d)
test tube B, because the time is less
79.
A student’s hypothesis is that adding food coloring to his reaction will decrease the time it takes to react. In test tube A, he does not add the food coloring, and the reaction time is 68 seconds. In test tube B, he does add the food coloring, and the reaction time is 45 seconds. The student then notices that if he stirs the test tube, the reaction time decreases. In test tube C, he stirs the reaction but does not add food coloring. Based on this information, how long will the new reaction take?
a)
greater than 68 seconds
b)
less than 68 seconds
c)
greater than 45 seconds
d)
less than 45 seconds
80.
A student’s hypothesis is that adding food coloring to his reaction will decrease the time it takes to react. In test tube A, he does not add the food coloring, and the reaction time is 68 seconds. In test tube B, he does add the food coloring, and the reaction time is 45 seconds. The student then notices that if he stirs the test tube, the reaction time decreases. In test tube C, he stirs the reaction but does not add food coloring. What combination of conditions would make the reaction time the shortest?
a)
food coloring & stirring
b)
no food coloring & stirring
c)
food coloring & no stirring
d)
no food coloring & no stirring
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