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WorksheetsAtomic Structure Test Honors
Total questions: 74
Worksheet time: 51mins
Atoms of elements in the same group of the periodic table share the same
number of energy levels
number of valence electrons
atomic numbers
atomic masses
The atomic number of magnesium is 12. Therefore its nucleus must contain
6 protons and 6 neutrons
6 protons and 6 electrons
12 neutrons and no protons
12 protons and no electrons
A neutral atom may contain 8 protons,
9 neutrons and 10 electrons
8 neutrons and 10 electrons
9 neutrons and 8 electrons
10 neutrons and 9 electrons
An element with 5 protons, 6 neutrons, and 8 electrons has an atomic number of
A. 5
B. 6
C. 8
D. 11
An element with 5 protons, 6 neutrons, and 8 electrons has a mass number of
5
6
8
11
The farther an electron is from the nucleus, the more (a) it has.
charge
energy
mass
pull
Atoms of the same element that have different numbers of neutrons are called
molecules
ions
protons
isotopes
The total number of electrons in the outer shell of a sodium atom is
1
2
8
18
Which particles determine the atomic number of an element?
Protons only
Neutrons and protons
Neutrons only
Protons and electrons
The total number of neutrons in the nucleus of any atom is equal to the
mass number of the atom
atomic number of the atom
atomic number minus the mass number
mass number minus the atomic number
The maximum number of electrons that can occupy the 2nd shell of an atom of magnesium is
1
2
8
18
What is the correct electron arrangement for sulfur?
2-8-6
2-8-8
4-6-2
2-8-4
An unstable nucleus results from too many or too few (a) .
neutrons
protons
electrons
radons
The nucleus of an atom has all of the following characteristics EXCEPT that it
is positively charged
is very dense
contains nearly all of the atom’s mass
contains nearly all of the atom’s volume
An atom is electrically neutral because
neutrons balance the protons and electrons
nuclear forces stabilize the charges
the numbers of protons and electrons are equal
the numbers of protons and neutrons are equal
The nucleus of isotope A of an element has a larger mass than isotope B of the same element. The number of neutrons in the nucleus of isotope A is (a) the number of neutrons in the nucleus of isotope B.
less than
greater than
the same as
The nucleus of isotope A of an element has a larger mass than isotope B of the same element. The number of protons in the nucleus of isotope A is (a) the number of protons in the nucleus of isotope B.
less than
greater than
the same as
The atoms in Group A are different from the atoms in Group B because only the atoms in Group A have _______
their outer energy levels filled with electrons
three energy levels of electrons
arrangements typical of metals
arrangements typical of nonmetals
Which of the following is a transition metal?
Calcium
Nickel
Aluminum
Tellurium
Which word(s) below is represented by the word “period” on the Periodic Table?
Group
Family
Energy level
Valence electrons
When looking at the halogens on the periodic table, how does the number of valence electrons change as the energy level is increased?
The total number of valence electrons does not change. It remains at 7.
The total number of valence electrons does not change. It remains at 1.
The total number of valence electrons increases by 1 with each energy level.
The total number of valence electrons decreases by 1 with each energy level.
What is the correct symbol for an isotope of carbon with 6 protons and 6 neutrons?
12C
12C
6C
6C6
Which statement about the arrangement of the periodic table is not true?
Noble gases are in the group farthest to the right
Metals are found on the left side of the periodic table
Rare earth elements are in the first column on the left
Transition metals are in the center of the periodic table
Boron, carbon, nitrogen and oxygen are all members of the same ____________.
Family
Period
Group
Valence level
Which of the following elements would be the best conductor of electricity?
Iodine
Silicon
Silver
Argon
Which of the following elements would be the most reactive?
Iodine
Silicon
Silver
Argon
Which of the following elements would be the least reactive?
Iodine
Silicon
Silver
Argon
Complete the chart below. Isotopic Symbol: 42K. What is the Atomic #?
19
20
18
21
Complete the chart below. Isotopic Symbol: 42K. What is the Mass #?
42
39
19
40
Complete the chart below. Isotopic Symbol: 42K. What is the number of Protons?
19
20
18
21
Complete the chart below. Isotopic Symbol: 42K. What is the number of Neutrons?
23
19
21
20
Complete the chart below. Isotopic Symbol: 42K. What is the number of Electrons?
19
20
18
21
Complete the chart below. Isotopic Symbol: 42K. What is the Group Name?
alkali metals
halogens
noble gases
alkaline earth metals
Complete the chart below. Isotopic Symbol: 5He. What is the Atomic #?
2
3
4
5
Complete the chart below. Isotopic Symbol: 5He. What is the Mass #?
5
4
3
6
Complete the chart below. Isotopic Symbol: 5He. What is the number of Protons?
2
3
4
5
Complete the chart below. Isotopic Symbol: 5He. What is the number of Neutrons?
3
2
4
5
Complete the chart below. Isotopic Symbol: 5He. What is the number of Electrons?
2
3
4
5
Complete the chart below. Isotopic Symbol: 5He. What is the Group Name?
noble gases
alkali metals
halogens
alkaline earth metals
Complete the chart below. Isotopic Symbol: 127I. What is the Atomic #?
53
47
63
79
Complete the chart below. Isotopic Symbol: 127I. What is the Mass #?
127
131
120
115
Complete the chart below. Isotopic Symbol: 127I. What is the number of Protons?
53
127
74
80
Complete the chart below. Isotopic Symbol: 127I. What is the number of Neutrons?
74
53
127
80
Complete the chart below. Isotopic Symbol: 127I. What is the number of Electrons?
53
54
127
74
Complete the chart below. Isotopic Symbol: 127I. What is the Group Name?
halogens
alkali metals
noble gases
transition metals
Which of the following correctly represents the Bohr Model for Calcium-42?
20 protons, 22 neutrons, 20 electrons in shells 2, 8, 8, 2
20 protons, 20 neutrons, 22 electrons in shells 2, 8, 8, 2
22 protons, 20 neutrons, 20 electrons in shells 2, 8, 8, 2
20 protons, 22 neutrons, 22 electrons in shells 2, 8, 8, 2
Which of the following correctly represents the Bohr Model for 10Be?
4 protons, 6 neutrons, 4 electrons in two energy levels
5 protons, 5 neutrons, 5 electrons in two energy levels
6 protons, 4 neutrons, 6 electrons in two energy levels
4 protons, 6 neutrons, 10 electrons in three energy levels
Which of the following best describes one similarity and one difference between two atoms of elements from the same group on the periodic table?
They have the same number of protons and different numbers of neutrons.
They have the same number of valence electrons and different numbers of electron shells.
They have the same atomic mass and different atomic numbers.
They have the same number of electron shells and different numbers of protons.
Match the following scientists with their appropriate accomplishments.
Arranged the elements on the periodic table based on atomic number
Arranged the elements on the periodic table based on atomic number
Solid Sphere Model; elements are atoms with different masses
Plum Pudding Model; atom is positive sphere with negatively charged particles evenly embedded throughout
Electron Cloud Model; surrounding the nucleus is an electron cloud made of shells – electrons do not, however, travel in a fixed orbit.
Nuclear Model; Gold Foil experiment allowed him to discover that the nucleus was the positively charged center of the atom surround by negatively charged electrons
Nuclear Model; Gold Foil experiment allowed him to discover that the nucleus was the positively charged center of the atom surround by negatively charged electrons
Electrons travel in fixed orbits around the nucleus of the atom
Arranged the elements on the periodic table based on atomic mass
Named the atom based on the Greek word meaning indivisible
Classify the following elements as metals, nonmetals, or metalloids. Include one characteristic/property of each type. Ar, H, Al, Na, Te, F
Metals: Al, Na Nonmetals: Ar, H, F Metalloids: Te Property of Metals: good conductors Property of Nonmetals: poor conductors Property of Metalloids: semi-conductors
Metals: Ar, H Nonmetals: Al, Na, F Metalloids: Te Property of Metals: poor conductors Property of Nonmetals: good conductors Property of Metalloids: semi-conductors
Metals: Al, Te Nonmetals: Ar, H, Na Metalloids: F Property of Metals: semi-conductors Property of Nonmetals: good conductors Property of Metalloids: poor conductors
Metals: Na, Te Nonmetals: Ar, F, Al Metalloids: H Property of Metals: poor conductors Property of Nonmetals: semi-conductors Property of Metalloids: good conductors
An isotope of Carbon has 7 neutrons. a. Write this isotope’s notation in Nuclear Form. b. Write this isotope’s notation in Hyphen Form. c. Is this the most common form of the isotope? Explain how you know if it is or isn’t.
a. 13C b. Carbon-13 c. No, because the average atomic mass on the periodic table is 12.01 and that is a weighted average, so the most common version is 12C.
a. 14C b. Carbon-14 c. Yes, because Carbon-14 is the most stable isotope of carbon.
a. 12C b. Carbon-12 c. Yes, because the average atomic mass is closest to 12.
a. 13C b. Carbon-13 c. Yes, because the average atomic mass is 13.
This element is in the same family as Br, but has fewer protons than Mg. It must be ________
F
Cl
I
At
This element has 6 energy levels and 8 valence electrons. It must be ________
Rn
O
Kr
Xe
This element is in the alkaline earth metals group and has 3 energy levels.
Mg
Ca
Na
K
This element is in the family with the most reactive nonmetals and has 4 energy levels. It must be ________
Br
Cl
I
Ne
Which of the following lists the three forces that hold the atom together?
Gravitational, Electromagnetic, Strong Nuclear
Electromagnetic, Strong Nuclear, Weak Nuclear
Strong Nuclear, Weak Nuclear, Frictional
Electromagnetic, Gravitational, Weak Nuclear
Carbon has an atomic number of (a) and a mass number of (b)
What does the 6 represent?
Atomic mass
atomic number
chemical symbol
element name
Which isotope has 4 neutrons?
What does the period number indicate about an element?
How many valence electrons it has
How many electron shells it uses
How many total electrons it has
How many total protons it has
Justify the placement of hydrogen in Group 1 of the periodic table despite its non-metallic properties.
It has one electron in its outer shell.
It forms covalent bonds like other non-metals.
It has a high electronegativity.
It is a gas at room temperature.
Subatomic particles with a negative charge
Electrons
Neutrons
Protons
Quarks
Conducted the gold foil experiment
Dalton
Thomson
Rutherford
Bohr
Said that all copper atoms are identical in size, mass, and properties
Dalton
Thomson
Rutherford
Bohr
Discovered the electron
Dalton
Thomson
Rutherford
Bohr
shiny, silvery solids
good conductors of heat and electricity
malleable and ductile
located ot the left of the metalloids
gases, or dull brittle solids
poor conductors
right of the metalloids
solids
semi-conductors
physcial properties like metals
chemical properties like nonmetals
Label the following periodic table
metals
nonmetals
matalloids
transition metals
What are the vertical columns on the periodic table called?
Groups
Periods
Elements
Valence electrons
