Chemistry: The Periodic Table

How are elements organized in the periodic table ?

• Alphabetically

• Based on physical and chemical properties

• Increasing number of electrons

• Most reactive to least reactive

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Most elements on the periodic table are classified as ____________.

• Gases

• Metalloids

• Metals

• Nonmetals

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Groups on the periodic table are arranged...

• Vertically

• Horizontally

• Diagonally from bottom right corner

• Diagonally from top right corner

Which accurately describes nonmetals?

• Poor conductors of electricity

• Often used in computer parts

• Both malleable and ductile

• Both dull and brittle

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Which group on the periodic table is the most reactive?

• Group 1

• Group 2

• Group 13

• Group 18

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What is the chemical symbol for Sodium?

• S

• So

• Na

• Ca

How many neutrons does Chlorine have?

• 17

• 36

• 35

• 18

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Which of the following pairs shows the LARGEST atomic size element FIRST?

• Ge, Ni

• Si, Ar

• Rb, I

• Hg, Ba

Which properties most accurately describe the element Krypton (Kr)?

• Highly reactive

• Ductile

• Weak conductor of electricity

• Has 8 valence electrons

• Brittle and dull

How many periods are there in the periodic table?

• 7

• 9

• 10

• 18

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