Chapter 4 Test
The Periodic Table of Elements
Part 1- 30 Multiple Choice Questions (2 pts each)
Directions: Choose the letter that best answers the question or completes the statement.
1. The ability to pound a metal into a flat sheet without breaking it is called:
A. luster
C. ductility
B. malleability
D. conductivity
2. All of the following are physical properties of metals except:
A. luster
C. corrosion
B. malleability
D. low melting points
3. Which class of elements best conducts electricity?
A. metals
C. metalloids
B. nonmetals
D. noble gases
4. Elements on the periodic table are ordered by:
A. atomic number
C. atomic symbol
B. atomic mass
D. electron shells
5. An element in Group 2 on the Periodic table would be considered a(n):
A. Transition metal
C. Alkaline earth metal
B. Metalloid
D. Halogen
6. What do the groups/families in the periodic table have in common?
A. the number of electron shells
B. the state of matter
C. the amount of isotopes
D. similar physical and chemical properties
7. What do the elements sulfur (S), nitrogen (N), helium (He), and carbon (C) have in common?
A. they are noble gases
B. they are nonmetals
C. they have the same number of neutrons
D. they have the same number of protons
8. Boron’s atomic number is 5. This means that a boron atom has:
A. five neutrons in its nucleus
B. five protons in its nucleus
C. a total of five protons and neutrons
D. a total of five neutrons and electrons
9. Hydrogen has three naturally occurring isotopes. Which of the following describes the relationship of
the isotopes?
A. different mass, different atomic number
B. same mass, different atomic number
C. different mass, same atomic number
D. same mass, same atomic number
Use the illustration at right for questions 10-12.
The illustration shows the upper right section of
the Periodic table.
10. Which section of the table represents the metalloids?
A. lightly shaded section to the right
B. dark shaded section in the middle
C. medium shaded section to the left
D. metalloids are not located in this section
11. Where are the metals located?
A. lightly shaded section to the right
B. dark shaded section in the middle
C. medium shaded section to the left
D. the entire section would be the metals
12. What is the name used to describe shape created in the center (shaded the darkest)?
A. stair-step line
B. reactivity line
C. group
D. period
Use the table at right for questions 13-16.
The table lists numbers of electrons for some
elements.
13. Which of these elements is atomic number 8?
A. carbon
B. oxygen
C. neon
D. chlorine
14. How many electrons are in Neon’s first energy level?
A. 1
B. 2
C. 6
D. 8
15. Which of these elements would be the most reactive?
A. carbon
B. oxygen
C. neon
D. sodium
16. Which of these elements can be found in the third period of the periodic table?
A. carbon, oxygen and neon
B. sodium and chlorine
C. chlorine only
D. none of them
17. The atomic mass tells the number of___________ in an atom.
A. electrons and neutrons
B. electrons and protons
C. protons and neutrons
D. electrons or protons
18. A subatomic particle that has a negative charge is a(n):
A. proton
C. electron
B. neutron
D. nucleus
19. An element’s atomic number is equal to its number of:
A. protons
C. electrons
B. neutrons
D. nucleus
20. Two different isotopes of an element have different:
A. atomic numbers
B. numbers of protons
C. numbers of neutrons
D. numbers of electrons
21. Atoms have an overall neutral charge because they have:
A. neutrons in their nucleus
B. protons in their nucleus
C. an equal number of electrons and protons
D. an equal number of neutrons and protons
22. An iron atom has an atomic mass of 56. Its atomic number is 26. How many neutrons does the iron
atom have?
A. 26
C. 56
B. 30
D. 82
23. What is the atomic mass of an element that has 19 protons, 20 neutrons, and 19 electrons?
A. 19
C. 39
B. 20
D. 58
24. Each element on the Periodic table is represented by a(n) ________ that consists of one or two letters.
A. atomic symbol
B. atomic number
C. electron
D. name
25. Which name below is not an actual family name on the Periodic table of elements?
A. Noble Gases
B. Alkali Metals
C. Carbonates
D. Halogens
26. Which statement about the modern model of the atom is not true?
A. Electrons are located inside the nucleus.
B. Electrons are located very far away from the nucleus.
C. Electrons can be found in certain energy levels.
D. The precise location of electrons cannot be predicted.
27. Mendeleev arranged the first Periodic table of elements by:
A. increasing atomic number
B. increasing atomic mass
C. metals, nonmetals, and metalloids
D. radioactivity
Use the diagrams below for questions 28-30.
The diagrams represent models of atoms
28. Which of the models best represents the atom as it existed during Dalton’s time?
A. (1)
B. (2)
C. (3)
D. (4)
E. (5)
29. Which of the models best represents the “Plum Pudding” model as described by Thompson?
A. (1)
B. (2)
C. (3)
D. (4)
E. (5)
30. Which of the following models best represents the model of the atom after Rutherford’s “Gold Foil”
experiment?
A. (1)
B. (2)
C. (3)
D. (4)
E. (5)
Name ________________________________________
Date _____________
Chapter 4 Test
The Periodic Table of Elements
Part 2- Calculations and Written Responses
Calculations: (10 pts total)
31. Europium has two isotopes: Eu-151 and Eu-153. Europium-151 has an abundance of 48.03%
and Europium-153 has an abundance of 51.97%. Calculate the average atomic mass for
Europium. Show your work.
32. Scientists believe they have discovered element number 118 on the Periodic table! This new
element has been named “Brandtium” and has been found to have three isotopes. Use the
information below to calculate the average atomic mass of Brandtium (Bt). Show your work.
118
Bt
Percent abundance: 72%
Bt
Percent abundance: 21%
Bt
Percent abundance: 7%
294
118
295
118
298
Directions: Use the chart to answer questions 33-38. Write your answer on the line. (20 pts total)
Atoms of Some Common Elements
Element
Atomic
Number
Sodium
11
Magnesium
12
Aluminum
Phosphorus
15
Mass
Number
Protons
Neutrons
11
12
24
12
27
13
31
Electrons
12
14
13
16
15
_______ 33. What is the mass number of sodium?
_______ 34. What is the total number of electrons in an atom of sodium?
_______ 35. How many neutrons are in an atom of magnesium?
_______ 36. What is the atomic number of aluminum?
_______ 37. How many protons are in an atom of phosphorus?
38. The element silicon has been omitted from this table. It appears in Period 3 of the periodic table
between aluminum and phosphorus. Given that information, which of the five columns in the chart
could you fill in for silicon?
__________________________________________________________________________
Short Essay Question:

Choose 1 of the 3 questions to answer.

Your response will be graded out of 10 points.

Answer each question using complete sentences on the lined paper.

Please underline the KEY terms/vocabulary in your response.
39. Discuss how the model of the atom has evolved to the atomic theory accepted today. Include at least
four scientists and their contributions to this theory.
40. Explain how the Periodic table of elements is organized. Include at least three different ways and
include examples.
41. Explain the differences between a metal, nonmetal, and metalloid. Include at least three differences and
include examples of each category.