WorksheetsCFA 3 Review One
Total questions: 25
Worksheet time: 24mins
Name
Class
Date
1.
SPS2c.
The correct name for the binary compound, MgCl2, is
The correct name for the binary compound, MgCl2, is
a)
magnesium(II) chloride(I).
b)
magnesium dichloride.
c)
magnesium chlorine.
d)
magnesium chloride.
2.
SPS3b. An unbalanced chemical equation is shown above.
What are the coefficients of the balanced equation?
What are the coefficients of the balanced equation?
a)
2:1:3
b)
2:2:3
c)
3:1:2
d)
3:2:2
3.
SPS4b. A radioactive isotope has a half-life of 2.0 years. The fraction of a pure sample of the isotope that will have decayed in 6.0 years is
a)
1/8
b)
1/3
c)
3/4
d)
7/8
4.
SPS2b. Which compound will most likely be formed when lithium (Li) and nitrogen (N) are chemically combined?
a)
LiN
b)
Li3N
c)
LiN3
d)
Li3N3
5.
SPS3a. What type of reaction does this illustration represent?
a)
Decomposition
b)
Synthesis
c)
Single-replacement
d)
Double-replacement
6.
SPS4a.
The illustration represents what type of nuclear reaction?
The illustration represents what type of nuclear reaction?
a)
Alpha decay
b)
Beta decay
c)
Fission
d)
Fusion
7.
SPS2.a Which compound results from covalent bonding?
a)
NH4Cl
b)
K2SO4
c)
NaCl
d)
C6H12O6
8.
SPS1b. An element located at Group 18 and Period 4 would be classified as which type of substance?
a)
a halogen
b)
a metalloid
c)
a lanthanoid
d)
a nonmetal
9.
SPS3a. A balanced chemical equation has equal numbers of atoms of each type on both sides of the equation. This illustrates the principle of
a)
conservation of energy
b)
conservation of mass
c)
action and reaction
d)
natural selection
10.
SPS3a. The appropriate model for a decomposition reaction in the picture above is...
a)
A
b)
B
c)
C
d)
D
11.
SPS2b What is the correct formula for the compound formed when lithium and oxygen combine?
a)
LiO
b)
Li2O
c)
LiO2
d)
Li2O2
12.
SPS1a
An atom of C-14 contains how many
neutrons in all?
An atom of C-14 contains how many
neutrons in all?
a)
6
b)
8
c)
12
d)
14
13.
SPS2a. Which is true of all covalent compounds?
a)
They share electrons in bonds.
b)
They are electrically charged
c)
They are good conductors in water.
d)
They are usually made of a metal and a nonmetal.
14.
SPS1a
How do the three isotopes Sn-116, Sn-118, and Sn-119 differ?
How do the three isotopes Sn-116, Sn-118, and Sn-119 differ?
a)
Sn-116 has 166 neutrons, Sn-118 has 168 neutrons, and Sn-119 has 169 neutrons.
b)
Sn-116 has 116 neutrons, Sn-118 has 118 neutrons, and Sn-119 has 119 neutrons.
c)
Sn-116 has 66 neutrons, Sn-118 has 68 neutrons, and Sn-119 has 69 neutrons.
d)
Sn-116 has 50 neutrons, Sn-118 has 52 neutrons, and Sn-119 has 53 neutrons.
15.
SPS1a.
This diagram represents a neutral atom of fluorine-19. Which best describes the structure of fluorine-19?
This diagram represents a neutral atom of fluorine-19. Which best describes the structure of fluorine-19?
a)
2 electrons in the first energy level; 7 electrons in the second energy level
b)
2 electrons in the first energy level; 8 electrons in the second energy level
c)
9 protons and 9 neutrons in the nucleus
d)
10 protons and 9 neutrons in the nucleus
16.
SPS3.a. Solid chromium (II) reacts with oxygen gas to form solid CrO. What is this type of reaction?
a)
decompostiton
b)
synthesis
c)
single replacement
d)
double replacement
17.
SPS4b. What is the half-life of iodine-131?
a)
8
b)
16
c)
24
d)
32
18.
SPS3b. When the equation below is balanced, the coefficient of the hydrochloric acid will be ___
a)
2
b)
3
c)
4
d)
6
19.
SPS4a. Even though nuclear fission has been used to produce electric power for many decades, nuclear fusion power plants have not yet been developed. Why is nuclear fusion not used to produce power? Which of the following reasons is supported with evidence from the chart above?
a)
Nuclear fission has a higher energy output than nuclear fusion making fission the most acceptable option for producing power.
b)
Nuclear fusion requires extremely high temperatures and pressures and there has been no process for containment developed at this point.
c)
Nuclear fusion creates a large amount of radioactive waste and no long term storage solutions have been developed at this point.
d)
Sources of radioactive material to fuel the fusion process are scarce due to radioactive decay.
20.
SPS1a. A scientist is measuring the mass of two magnesium atoms. One atom has a mass of 24 units. The other atom has a mass of 26 units. This is a model of a magnesium atom with a mass of 24 units. Which subatomic particle needs to be altered to represent an atom of magnesium with a mass of 26 units? What name is given to this type of atom?
a)
isotope
b)
ion
21.
SPS3a. Which type of reaction is represented here?
a)
single replacement
b)
double replacement
c)
synthesis
d)
decomposition
22.
SPS4a. How do the nuclear reactions that power the Sun compare to the nuclear reactions that occur in a reactor at a nuclear power facility?
a)
The Sun is powered via nuclear fusion while a nuclear power facility harnesses energy from nuclear fission.
b)
The Sun is powered via nuclear fission while a nuclear power facility harnesses energy from nuclear fusion.
c)
Both the Sun and a nuclear power facility are powered by nuclear fusion reactions
d)
Both the Sun and a nuclear power facility are powered by nuclear fission reactions.
23.
SPS2c.
The correct name for the binary compound, Na2O, is
The correct name for the binary compound, Na2O, is
a)
sodium oxide.
b)
sodium oxygen.
c)
disodium oxide.
d)
disodium monoxide.
24.
SPS1c. Elements that gain electrons, are gases at room temperature, and form negative ions are most likely classified as
a)
Non-metals
b)
Metals
c)
Metalloids
d)
Noble gases
25.
SPS4a. A star gives off heat and light from the nuclear fusion reaction that takes place inside. What change happens during the nuclear reaction?
a)
Nitrogen is changed to hydrogen.
b)
Helium is changed to hydrogen.
c)
Hydrogen is changed to nitrogen.
d)
Hydrogen is changed to helium.
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