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The Periodic Table of Elements:
Organized for your Benefit
Use the information provided under the Periodic Table section in to
answer and understand the following questions on the Periodic Table. Understanding its
organization is the key to its use!
1. About how many known elements are there?
A. 10
B. 50
C. 100
D. 200
2. Atomic number represents the number of what in an atom (circle all that apply)?
A. Protons
B. Neutrons
C. Electrons
D. Protons and Neutrons
3. Elements in the periodic table are arranged by
A. Atomic Number
B. Atomic Weight
C. Number of Neutrons
D. Chemical Reactivity
4. Atomic Weight or mass of an element measures the weight of what particles in an
A. Protons & Electrons
B. Electrons & Neutrons
C. Protons & Neutrons
D. Neutrons, Protons, & Electrons
5. An isotope of an element will differ in its
A. Atomic Mass
B. Atomic Number
C. Number of electrons
D. Valence
6. Which scientist came up with the concept of a periodic table that included all of the
known elements?
A. Jason Priestly
B. Dmitri Mendeleev
C. Antoine Lavoiseir
D. Albert Einstein
7. An isotope of Carbon called Carbon 14 has two extra neutrons. This will change its
A. Atomic Number
B. Valence
C. Atomic Mass
D. Electronegativity
8. Inert Gases are found where on the Periodic Table?
A. Far Left
B. Center
C. Bottom
D. Far Right
What does it mean for a gas to be ‘inert’?
9. Elements in the same group share the same chemical properties. Looking at your
periodic table, can you find any pattern why this may be the case?
10. The periodic table is classified by families. What does it mean for an element to be
apart of a ‘family’? Name 5 families of the periodic table.
11. Which of the following is an example of a physical property of an element? (circle
all that apply)
A. Radioactivity
B. Boiling Point
C. Valence
D. Density
E. Conductivity
12. Which of these choices is NOT a family of elements?
A. Halogen
B. Metal
C. Inert Gas
D. All are groups of elements.
13. A period (a row) on the periodic table has elements that have what in common…
A. They have similar chemical properties
B. They have the same number of electrons
C. They have the same number of electron shells
D. They are similarly reactive in compounds.
14. The vertical columns in a periodic table are called groups. A group of elements has
what in common….
A. The same number of electrons
B. The same number of protons
C. The same number of electrons in the outer shell.
D. The same chemical properties.
15. What is the name of the family of elements that has 7 electrons in its outer shell
making it very reactive and often found combining with many other elements?
A. Metals
B. Transition Metals
C. Alkalides
D. Halogens
What are 4 elements that are a part of this family?