Unit 2 - Chapter 4 and 5 Physical Science

How did Mendeleev arrange the elements?

• alphabetical 
• density
• melting point
• atomic mass

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The horizontal row on the periodic table is called a

• group
• family
• period
• atomic number

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A vertical column is called...

• group
• tower
• period
• crew

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The number at the bottom of each square on the periodic table is the ...

• atomic number
• atomic mass
• chemical symbol
• element name

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The number at the top of each square on the periodic table is the ...

• atomic number
• atomic mass
• Chemical Symbol
• Element Name

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Most of the elements on the periodic table are classified as _____.

• Metals
• Nonmetals
• Metalloids
• Periods

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A ___________ is an arrangement of elements in columns

• columns
• rows
• periodic table
• electron shell

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Each column in the periodic table is called a 

• period
• group
• cluster
• unit

The atomic number tells you what?

• number of electrons
• number of protons
• number of neutrons
• both electrons and protons in an atom.

Which group of the periodic table is composed of inert (not reactive)  gases?

• alkali metals
• alkaline earth metals
• halogens
• noble gases

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