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WorksheetsChemistry Unit 4: Atomic Structure Review
Total questions: 65
Worksheet time: 1hrs 5mins
The smallest particle of an element that can exist
proton
nucleus
atom
electron
neutron
A positively charged subatomic particle
proton
nucleus
atom
electron
neutron
A negatively charged subatomic particle
proton
nucleus
atom
electron
neutron
A subatomic particle with no charge
proton
nucleus
atom
electron
neutron
The central part of an atom that contains the proton and neutrons
proton
nucleus
atom
electron
neutron
A pure substance made of only one kind of atom
element
compound
atom
periodic table
The atomic number of an element is the total number of which particles in the nucleus?
neutrons
protons
protons plus neutrons
protons plus electrons
The mass number of an element is the total number of which particles in the nucleus?
neutrons
protons
protons plus neutrons
protons plus electrons
What does the number 84 in the name krypton-84 represent?
the atomic number
the mass number
the sum of protons and electrons
the number of protons
All atoms are:
positively charged, with more protons than electrons
negatively charged, with more electrons than protons
neutral, with the number of protons equaling the number of electrons
neutral, with the number of protons equaling the number of neutrons
Isotopes of the same element have different
numbers of neutrons
numbers of protons
numbers of electrons
atomic numbers
How many protons, electrons, and neutrons does an atom with an atomic number 50 and a mass number 125 contain?
50 protons, 50 electrons, 75 neutrons
50 protons, 75 electrons, 50 neutrons
50 protons, 75 electrons 125 neutrons
50 protons, 50 electrons, 125 neutrons
How do the isotopes hydrogen-1 and hydrogen-2 differ?
hydrogen-2 has one more electron than hydrogen-1
hydrogen-2 has one more neutron than hydrogen-1
hydrogen-2 has two protons and hydrogen-1 has one proton
hydrogen-2 has one proton and hydrogen-1 has zero protons
What unit is used to measure the mass of an atom?
atomic mass unit (amu)
gram (g)
milligram (mg)
average atomic unit (aau)
How many protons, neutrons, and electrons does an atom of sodium-25 have?
11 protons, 11 electrons, 14 neutrons
11 protons, 14 electrons, 11 neutrons
11 protons, 11 electrons, 25 neutrons
25 protons, 14 electrons, 11 neutrons
Write the isotopic notation for an atom that has 20 protons, 20 electrons, and 22 neutrons.
(a)
In the shorthand notation pictured, what does the number 39 indicate?
atomic number
mass number
number of electrons
average atomic mass
In the shorthand notation pictured, what does the number 19 indicate?
atomic number
mass number
number of electrons
average atomic mass
Use the shorthand notation pictured to answer this question: How many protons are in the atom?
(a)
Use the shorthand notation pictured to answer this question: How many neutrons are in the atom?
(a)
How many electron shells would be needed in a Bohr diagram of an atom that contains 12 protons?
1 electron shell
2 electron shells
3 electron shells
4 electron shells
How many electron shells would be needed in a Bohr diagram of an atom that contains 3 protons?
1 electron shell
2 electron shells
3 electron shells
4 electron shells
SELECT ALL THAT APPLY.
Which electron shell(s) can hold a maximum of 2 electrons?
K
L
M
N
SELECT ALL THAT APPLY.
Which electron shell(s) can hold a maximum of 8 electrons?
K
L
M
N
The closer an electron is to the nucleus, the ________________ energy it has.
more
less
SELECT ALL THAT APPLY.
Which subatomic particle(s) are located in the nucleus?
protons
electrons
neutrons
SELECT ALL THAT APPLY.
Which subatomic particle(s) are located outside the nucleus?
protons
electrons
neutrons
SELECT ALL THAT APPLY.
Which subatomic particle(s) have a mass of 1 amu?
protons
electrons
neutrons
SELECT ALL THAT APPLY.
Which subatomic particle(s) have a mass of 0 amu?
protons
electrons
neutrons
Use the image the answer the question.
What is the chemical symbol?
(a)
Use the image the answer the question.
What is the element name?
(a)
Use the image the answer the question.
What is the atomic number?
(a)
Use the image the answer the question.
What is the atomic mass?
(a)
Use the image the answer the question.
What is mass number?
(a)
Use the image the answer the question.
How many protons are in an atom of sodium?
(a)
Use the image the answer the question.
How many electrons are in an atom of sodium?
(a)
Use the image the answer the question.
How many neutrons are in an atom of sodium?
(a)
Write the isotopic notation for an atom that has 3 protons, 5 neutrons, and 3 electrons
(a)
What is the atomic number of the atom shown?
(a)
In order for an atom to be neutral, which subatomic particles must have an equal number?
protons and electrons
protons and neutrons
neutrons and electrons
The atomic number of Boron is
5
10.811
10
11
The atomic mass of Boron is
5
10.811
10
11
The mass number of Boron is
5
10.811
10
11
How many protons does an atom of boron have?
5
10.811
6
11
How many electrons does an atom of boron have?
5
10.811
6
11
How many neutrons does an atom of boron have?
5
10.811
6
11
What is the most common isotope of boron?
boron-5
boron-10
boron-11
boron-6
What is the mass number of the atom shown?
(a)
Which element is shown?
(a)
What is the atomic number of calcium?
(a)
What is the mass number of calcium?
(a)
What is the atomic mass of calcium?
(a)
How many protons are in an atom of calcium?
(a)
How many neutrons are in an atom of calcium?
(a)
LOOK AT YOUR PERIODIC TABLE:
What is the symbol for gold?
(a)
LOOK AT YOUR PERIODIC TABLE:
What is the symbol for iron?
(a)
LOOK AT YOUR PERIODIC TABLE:
What is the symbol for sulfur?
(a)
LOOK AT YOUR PERIODIC TABLE:
What element has an atomic number of 15?
(Write out the element name, NOT the symbol)
(a)
LOOK AT YOUR PERIODIC TABLE:
What element has an atomic number of 80?
(Write out the element name, NOT the symbol)
(a)
LOOK AT YOUR PERIODIC TABLE:
What element has 18 protons in its nucleus?
(Write out the element name, NOT the symbol)
(a)
LOOK AT YOUR PERIODIC TABLE:
What element has 56 protons in its nucleus?
(Write out the element name, NOT the symbol)
(a)
Write the isotopic notation for this atom. (Example: Carbon-12)
Protons = red
Neutrons = blue
Electrons = yellow
(a)
What element is this?
Protons = red
Neutrons = blue
Electrons = yellow
(a)
Write the isotopic notation for this atom. (Example: Carbon-12)
Protons = red
Neutrons = blue
Electrons = yellow
(a)
Which element is this?
Protons = red
Neutrons = blue
Electrons = yellow
(a)
